neuper@37906
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(* differentiation over the reals
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neuper@37906
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author: Walther Neuper
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neuper@37906
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000516
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neuper@37906
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*)
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neuper@37906
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neuper@37954
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theory Diff imports Calculus Trig LogExp Rational Root Poly Atools begin
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neuper@37906
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neuper@37993
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ML {*
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neuper@37993
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@{term "sin x"}
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neuper@37993
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*}
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neuper@37906
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consts
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neuper@37906
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neuper@37906
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d_d :: "[real, real]=> real"
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neuper@37993
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(*sin, cos :: "real => real" already in Isabelle2009-2*)
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neuper@37906
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(*
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neuper@37906
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log, ln :: "real => real"
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neuper@37906
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nlog :: "[real, real] => real"
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neuper@37906
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exp :: "real => real" ("E'_ ^^^ _" 80)
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neuper@37906
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*)
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neuper@37906
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(*descriptions in the related problems*)
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neuper@37993
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derivativeEq :: "bool => una"
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neuper@37906
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neuper@37906
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(*predicates*)
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neuper@37906
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primed :: "'a => 'a" (*"primed A" -> "A'"*)
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neuper@37906
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neuper@37906
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(*the CAS-commands, eg. "Diff (2*x^^^3, x)",
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neuper@37906
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"Differentiate (A = s * (a - s), s)"*)
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neuper@37906
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Diff :: "[real * real] => real"
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neuper@37906
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Differentiate :: "[bool * real] => bool"
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neuper@37906
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neuper@37906
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(*subproblem and script-name*)
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neuper@37906
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differentiate :: "[ID * (ID list) * ID, real,real] => real"
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neuper@37906
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("(differentiate (_)/ (_ _ ))" 9)
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neuper@37906
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DiffScr :: "[real,real, real] => real"
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neuper@37906
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("((Script DiffScr (_ _ =))// (_))" 9)
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neuper@37993
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DiffEqScr :: "[bool,real, bool] => bool"
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neuper@37906
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("((Script DiffEqScr (_ _ =))// (_))" 9)
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neuper@37954
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text {*a variant of the derivatives defintion:
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neuper@37954
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d_d :: "(real => real) => (real => real)"
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neuper@37954
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neuper@37954
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advantages:
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neuper@37954
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(1) no variable 'bdv' on the meta-level required
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neuper@37954
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(2) chain_rule "d_d (%x. (u (v x))) = (%x. (d_d u)) (v x) * d_d v"
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neuper@37954
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(3) and no specialized chain-rules required like
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neuper@37954
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diff_sin_chain "d_d bdv (sin u) = cos u * d_d bdv u"
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neuper@37954
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neuper@37954
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disadvantage: d_d (%x. 1 + x^2) = ... differs from high-school notation
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neuper@37954
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*}
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axioms (*stated as axioms, todo: prove as theorems
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neuper@37906
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'bdv' is a constant on the meta-level *)
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neuper@37983
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diff_const: "[| Not (bdv occurs_in a) |] ==> d_d bdv a = 0"
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neuper@37983
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diff_var: "d_d bdv bdv = 1"
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neuper@37983
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diff_prod_const:"[| Not (bdv occurs_in u) |] ==>
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neuper@37954
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d_d bdv (u * v) = u * d_d bdv v"
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diff_sum: "d_d bdv (u + v) = d_d bdv u + d_d bdv v"
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diff_dif: "d_d bdv (u - v) = d_d bdv u - d_d bdv v"
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neuper@37983
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diff_prod: "d_d bdv (u * v) = d_d bdv u * v + u * d_d bdv v"
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neuper@37983
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diff_quot: "Not (v = 0) ==> (d_d bdv (u / v) =
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neuper@37954
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(d_d bdv u * v - u * d_d bdv v) / v ^^^ 2)"
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neuper@37906
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diff_sin: "d_d bdv (sin bdv) = cos bdv"
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diff_sin_chain: "d_d bdv (sin u) = cos u * d_d bdv u"
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diff_cos: "d_d bdv (cos bdv) = - sin bdv"
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neuper@37983
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diff_cos_chain: "d_d bdv (cos u) = - sin u * d_d bdv u"
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diff_pow: "d_d bdv (bdv ^^^ n) = n * (bdv ^^^ (n - 1))"
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diff_pow_chain: "d_d bdv (u ^^^ n) = n * (u ^^^ (n - 1)) * d_d bdv u"
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diff_ln: "d_d bdv (ln bdv) = 1 / bdv"
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diff_ln_chain: "d_d bdv (ln u) = d_d bdv u / u"
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diff_exp: "d_d bdv (exp bdv) = exp bdv"
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diff_exp_chain: "d_d bdv (exp u) = exp u * d_d x u"
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(*
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diff_sqrt "d_d bdv (sqrt bdv) = 1 / (2 * sqrt bdv)"
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diff_sqrt_chain"d_d bdv (sqrt u) = d_d bdv u / (2 * sqrt u)"
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*)
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(*...*)
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frac_conv: "[| bdv occurs_in b; 0 < n |] ==>
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a / (b ^^^ n) = a * b ^^^ (-n)"
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frac_sym_conv: "n < 0 ==> a * b ^^^ n = a / b ^^^ (-n)"
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neuper@37906
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neuper@37983
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sqrt_conv_bdv: "sqrt bdv = bdv ^^^ (1 / 2)"
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sqrt_conv_bdv_n: "sqrt (bdv ^^^ n) = bdv ^^^ (n / 2)"
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neuper@37983
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sqrt_conv: "bdv occurs_in u ==> sqrt u = u ^^^ (1 / 2)"
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neuper@37983
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sqrt_sym_conv: "u ^^^ (a / 2) = sqrt (u ^^^ a)"
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neuper@37906
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neuper@37983
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root_conv: "bdv occurs_in u ==> nroot n u = u ^^^ (1 / n)"
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neuper@37983
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root_sym_conv: "u ^^^ (a / b) = nroot b (u ^^^ a)"
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neuper@37906
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neuper@37983
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realpow_pow_bdv: "(bdv ^^^ b) ^^^ c = bdv ^^^ (b * c)"
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neuper@37906
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neuper@37954
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ML {*
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neuper@37972
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val thy = @{theory};
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neuper@37972
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neuper@37954
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(** eval functions **)
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neuper@37954
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neuper@37954
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fun primed (Const (id, T)) = Const (id ^ "'", T)
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neuper@37954
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| primed (Free (id, T)) = Free (id ^ "'", T)
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neuper@38031
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| primed t = error ("primed called with arg = '"^ term2str t ^"'");
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neuper@37954
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neuper@37954
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(*("primed", ("Diff.primed", eval_primed "#primed"))*)
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neuper@37954
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fun eval_primed _ _ (p as (Const ("Diff.primed",_) $ t)) _ =
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neuper@37954
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SOME ((term2str p) ^ " = " ^ term2str (primed t),
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neuper@37954
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Trueprop $ (mk_equality (p, primed t)))
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neuper@37954
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| eval_primed _ _ _ _ = NONE;
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neuper@37954
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neuper@37954
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calclist':= overwritel (!calclist',
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neuper@37954
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[("primed", ("Diff.primed", eval_primed "#primed"))
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neuper@37954
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]);
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neuper@37993
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*}
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neuper@37993
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ML {*
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neuper@37954
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(** rulesets **)
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neuper@37954
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neuper@37954
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(*.converts a term such that differentiation works optimally.*)
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neuper@37954
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val diff_conv =
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neuper@37954
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Rls {id="diff_conv",
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neuper@37954
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preconds = [],
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neuper@37954
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rew_ord = ("termlessI",termlessI),
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neuper@37954
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erls = append_rls "erls_diff_conv" e_rls
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neuper@37954
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[Calc ("Atools.occurs'_in", eval_occurs_in ""),
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neuper@37969
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Thm ("not_true",num_str @{thm not_true}),
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neuper@37969
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Thm ("not_false",num_str @{thm not_false}),
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neuper@37954
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Calc ("op <",eval_equ "#less_"),
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neuper@37969
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Thm ("and_true",num_str @{thm and_true}),
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neuper@37993
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Thm ("and_false",num_str @{thm and_false})
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],
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neuper@37954
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srls = Erls, calc = [],
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neuper@37969
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rules = [Thm ("frac_conv", num_str @{thm frac_conv}),
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neuper@37969
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Thm ("sqrt_conv_bdv", num_str @{thm sqrt_conv_bdv}),
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neuper@37969
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Thm ("sqrt_conv_bdv_n", num_str @{thm sqrt_conv_bdv_n}),
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neuper@37969
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Thm ("sqrt_conv", num_str @{thm sqrt_conv}),
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neuper@37969
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Thm ("root_conv", num_str @{thm root_conv}),
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neuper@37969
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Thm ("realpow_pow_bdv", num_str @{thm realpow_pow_bdv}),
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neuper@38034
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Calc ("Groups.times_class.times", eval_binop "#mult_"),
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neuper@37969
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Thm ("rat_mult",num_str @{thm rat_mult}),
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neuper@37954
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(*a / b * (c / d) = a * c / (b * d)*)
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neuper@37965
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Thm ("times_divide_eq_right",num_str @{thm times_divide_eq_right}),
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neuper@37954
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(*?x * (?y / ?z) = ?x * ?y / ?z*)
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neuper@37965
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Thm ("times_divide_eq_left",num_str @{thm times_divide_eq_left})
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neuper@37954
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(*?y / ?z * ?x = ?y * ?x / ?z*)
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neuper@37954
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],
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neuper@37954
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scr = EmptyScr};
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neuper@37993
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*}
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neuper@37993
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ML {*
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neuper@37954
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(*.beautifies a term after differentiation.*)
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neuper@37954
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val diff_sym_conv =
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neuper@37954
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Rls {id="diff_sym_conv",
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neuper@37954
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preconds = [],
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neuper@37954
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rew_ord = ("termlessI",termlessI),
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neuper@37954
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erls = append_rls "erls_diff_sym_conv" e_rls
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neuper@37954
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[Calc ("op <",eval_equ "#less_")
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neuper@37954
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],
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neuper@37954
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srls = Erls, calc = [],
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neuper@37969
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rules = [Thm ("frac_sym_conv", num_str @{thm frac_sym_conv}),
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neuper@37969
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Thm ("sqrt_sym_conv", num_str @{thm sqrt_sym_conv}),
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neuper@37969
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Thm ("root_sym_conv", num_str @{thm root_sym_conv}),
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neuper@37954
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Thm ("sym_real_mult_minus1",
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neuper@37969
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num_str (@{thm real_mult_minus1} RS @{thm sym})),
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neuper@37954
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(*- ?z = "-1 * ?z"*)
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neuper@37969
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Thm ("rat_mult",num_str @{thm rat_mult}),
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neuper@37954
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(*a / b * (c / d) = a * c / (b * d)*)
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neuper@37965
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Thm ("times_divide_eq_right",num_str @{thm times_divide_eq_right}),
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neuper@37954
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(*?x * (?y / ?z) = ?x * ?y / ?z*)
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neuper@37965
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Thm ("times_divide_eq_left",num_str @{thm times_divide_eq_left}),
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neuper@37954
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(*?y / ?z * ?x = ?y * ?x / ?z*)
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neuper@38034
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Calc ("Groups.times_class.times", eval_binop "#mult_")
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neuper@37954
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],
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neuper@37954
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scr = EmptyScr};
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neuper@37954
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neuper@37954
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(*..*)
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neuper@37954
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val srls_diff =
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neuper@37954
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Rls {id="srls_differentiate..",
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neuper@37954
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preconds = [],
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neuper@37954
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rew_ord = ("termlessI",termlessI),
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neuper@37954
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erls = e_rls,
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neuper@37954
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srls = Erls, calc = [],
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neuper@37954
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rules = [Calc("Tools.lhs", eval_lhs "eval_lhs_"),
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neuper@37954
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Calc("Tools.rhs", eval_rhs "eval_rhs_"),
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neuper@37954
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Calc("Diff.primed", eval_primed "Diff.primed")
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neuper@37954
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],
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neuper@37954
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scr = EmptyScr};
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neuper@37993
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*}
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neuper@37993
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ML {*
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neuper@37954
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(*..*)
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neuper@37954
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val erls_diff =
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neuper@37954
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append_rls "erls_differentiate.." e_rls
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neuper@37969
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[Thm ("not_true",num_str @{thm not_true}),
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neuper@37969
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Thm ("not_false",num_str @{thm not_false}),
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neuper@37954
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neuper@37954
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Calc ("Atools.ident",eval_ident "#ident_"),
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neuper@37954
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Calc ("Atools.is'_atom",eval_is_atom "#is_atom_"),
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neuper@37954
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Calc ("Atools.occurs'_in",eval_occurs_in ""),
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neuper@37954
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Calc ("Atools.is'_const",eval_const "#is_const_")
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neuper@37954
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];
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neuper@37954
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neuper@37954
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(*.rules for differentiation, _no_ simplification.*)
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neuper@37954
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val diff_rules =
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neuper@37954
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Rls {id="diff_rules", preconds = [], rew_ord = ("termlessI",termlessI),
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neuper@37954
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erls = erls_diff, srls = Erls, calc = [],
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neuper@37969
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rules = [Thm ("diff_sum",num_str @{thm diff_sum}),
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neuper@37969
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Thm ("diff_dif",num_str @{thm diff_dif}),
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neuper@37969
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Thm ("diff_prod_const",num_str @{thm diff_prod_const}),
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neuper@37969
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Thm ("diff_prod",num_str @{thm diff_prod}),
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neuper@37969
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Thm ("diff_quot",num_str @{thm diff_quot}),
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neuper@37969
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Thm ("diff_sin",num_str @{thm diff_sin}),
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neuper@37969
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Thm ("diff_sin_chain",num_str @{thm diff_sin_chain}),
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neuper@37969
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Thm ("diff_cos",num_str @{thm diff_cos}),
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neuper@37969
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Thm ("diff_cos_chain",num_str @{thm diff_cos_chain}),
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neuper@37969
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Thm ("diff_pow",num_str @{thm diff_pow}),
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neuper@37969
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Thm ("diff_pow_chain",num_str @{thm diff_pow_chain}),
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neuper@37969
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Thm ("diff_ln",num_str @{thm diff_ln}),
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neuper@37969
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Thm ("diff_ln_chain",num_str @{thm diff_ln_chain}),
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neuper@37969
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Thm ("diff_exp",num_str @{thm diff_exp}),
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neuper@37969
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Thm ("diff_exp_chain",num_str @{thm diff_exp_chain}),
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neuper@37954
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(*
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neuper@37969
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Thm ("diff_sqrt",num_str @{thm diff_sqrt}),
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neuper@37969
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Thm ("diff_sqrt_chain",num_str @{thm diff_sqrt_chain}),
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neuper@37954
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*)
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neuper@37969
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Thm ("diff_const",num_str @{thm diff_const}),
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neuper@37969
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Thm ("diff_var",num_str @{thm diff_var})
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neuper@37954
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],
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neuper@37954
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scr = EmptyScr};
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neuper@37993
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*}
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neuper@37993
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ML {*
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neuper@37954
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(*.normalisation for checking user-input.*)
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neuper@37954
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val norm_diff =
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neuper@37954
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Rls {id="diff_rls", preconds = [], rew_ord = ("termlessI",termlessI),
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neuper@37954
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erls = Erls, srls = Erls, calc = [],
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neuper@37954
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rules = [Rls_ diff_rules,
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neuper@37954
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Rls_ norm_Poly
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neuper@37954
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],
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neuper@37954
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scr = EmptyScr};
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neuper@37954
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ruleset' :=
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neuper@37967
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overwritelthy @{theory} (!ruleset',
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neuper@37954
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[("diff_rules", prep_rls norm_diff),
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neuper@37954
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("norm_diff", prep_rls norm_diff),
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neuper@37954
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("diff_conv", prep_rls diff_conv),
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neuper@37954
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("diff_sym_conv", prep_rls diff_sym_conv)
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neuper@37954
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]);
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neuper@37954
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neuper@37993
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*}
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neuper@37993
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ML {*
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neuper@37954
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(** problem types **)
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neuper@37954
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neuper@37954
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store_pbt
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neuper@37972
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(prep_pbt thy "pbl_fun" [] e_pblID
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neuper@37954
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(["function"], [], e_rls, NONE, []));
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neuper@37954
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neuper@37954
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store_pbt
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neuper@37972
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(prep_pbt thy "pbl_fun_deriv" [] e_pblID
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neuper@37954
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(["derivative_of","function"],
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neuper@37993
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[("#Given" ,["functionTerm f_f","differentiateFor v_v"]),
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neuper@37993
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("#Find" ,["derivative f_f'"])
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neuper@37954
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],
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neuper@37954
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append_rls "e_rls" e_rls [],
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neuper@37993
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SOME "Diff (f_f, v_v)", [["diff","differentiate_on_R"],
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|
261 |
["diff","after_simplification"]]));
|
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|
262 |
|
neuper@37954
|
263 |
(*here "named" is used differently from Integration"*)
|
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|
264 |
store_pbt
|
neuper@37972
|
265 |
(prep_pbt thy "pbl_fun_deriv_nam" [] e_pblID
|
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|
266 |
(["named","derivative_of","function"],
|
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|
267 |
[("#Given" ,["functionEq f_f","differentiateFor v_v"]),
|
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|
268 |
("#Find" ,["derivativeEq f_f'"])
|
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|
269 |
],
|
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|
270 |
append_rls "e_rls" e_rls [],
|
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|
271 |
SOME "Differentiate (f_f, v_v)", [["diff","differentiate_equality"]]));
|
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|
272 |
*}
|
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|
273 |
ML {*
|
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|
274 |
|
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|
275 |
(** methods **)
|
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|
276 |
|
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|
277 |
store_met
|
neuper@37972
|
278 |
(prep_met thy "met_diff" [] e_metID
|
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|
279 |
(["diff"], [],
|
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|
280 |
{rew_ord'="tless_true",rls'=Atools_erls,calc = [], srls = e_rls, prls=e_rls,
|
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|
281 |
crls = Atools_erls, nrls = norm_diff}, "empty_script"));
|
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|
282 |
|
neuper@37954
|
283 |
store_met
|
neuper@37972
|
284 |
(prep_met thy "met_diff_onR" [] e_metID
|
neuper@37954
|
285 |
(["diff","differentiate_on_R"],
|
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|
286 |
[("#Given" ,["functionTerm f_f","differentiateFor v_v"]),
|
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|
287 |
("#Find" ,["derivative f_f'"])
|
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|
288 |
],
|
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|
289 |
{rew_ord'="tless_true", rls' = erls_diff, calc = [], srls = e_rls,
|
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|
290 |
prls=e_rls, crls = Atools_erls, nrls = norm_diff},
|
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|
291 |
"Script DiffScr (f_f::real) (v_v::real) = " ^
|
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|
292 |
" (let f_f' = Take (d_d v_v f_f) " ^
|
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|
293 |
" in (((Try (Rewrite_Set_Inst [(bdv,v_v)] diff_conv False)) @@ " ^
|
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|
294 |
" (Repeat " ^
|
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|
295 |
" ((Repeat (Rewrite_Inst [(bdv,v_v)] diff_sum False)) Or " ^
|
neuper@37991
|
296 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_prod_const False)) Or " ^
|
neuper@37991
|
297 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_prod False)) Or " ^
|
neuper@37991
|
298 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_quot True )) Or " ^
|
neuper@37991
|
299 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_sin False)) Or " ^
|
neuper@37991
|
300 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_sin_chain False)) Or " ^
|
neuper@37991
|
301 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_cos False)) Or " ^
|
neuper@37991
|
302 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_cos_chain False)) Or " ^
|
neuper@37991
|
303 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_pow False)) Or " ^
|
neuper@37991
|
304 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_pow_chain False)) Or " ^
|
neuper@37991
|
305 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_ln False)) Or " ^
|
neuper@37991
|
306 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_ln_chain False)) Or " ^
|
neuper@37991
|
307 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_exp False)) Or " ^
|
neuper@37991
|
308 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_exp_chain False)) Or " ^
|
neuper@37991
|
309 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_const False)) Or " ^
|
neuper@37991
|
310 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_var False)) Or " ^
|
neuper@37954
|
311 |
" (Repeat (Rewrite_Set make_polynomial False)))) @@ " ^
|
neuper@37993
|
312 |
" (Try (Rewrite_Set_Inst [(bdv,v_v)] diff_sym_conv False)))) f_f')"
|
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|
313 |
));
|
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|
314 |
*}
|
neuper@37993
|
315 |
ML {*
|
neuper@37954
|
316 |
store_met
|
neuper@37972
|
317 |
(prep_met thy "met_diff_simpl" [] e_metID
|
neuper@37954
|
318 |
(["diff","diff_simpl"],
|
neuper@37993
|
319 |
[("#Given" ,["functionTerm f_f","differentiateFor v_v"]),
|
neuper@37993
|
320 |
("#Find" ,["derivative f_f'"])
|
neuper@37954
|
321 |
],
|
neuper@37954
|
322 |
{rew_ord'="tless_true", rls' = erls_diff, calc = [], srls = e_rls,
|
neuper@37954
|
323 |
prls=e_rls, crls = Atools_erls, nrls = norm_diff},
|
neuper@37993
|
324 |
"Script DiffScr (f_f::real) (v_v::real) = " ^
|
neuper@37993
|
325 |
" (let f_f' = Take (d_d v_v f_f) " ^
|
neuper@37954
|
326 |
" in (( " ^
|
neuper@37954
|
327 |
" (Repeat " ^
|
neuper@37991
|
328 |
" ((Repeat (Rewrite_Inst [(bdv,v_v)] diff_sum False)) Or " ^
|
neuper@37991
|
329 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_prod_const False)) Or " ^
|
neuper@37991
|
330 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_prod False)) Or " ^
|
neuper@37991
|
331 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_quot True )) Or " ^
|
neuper@37991
|
332 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_sin False)) Or " ^
|
neuper@37991
|
333 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_sin_chain False)) Or " ^
|
neuper@37991
|
334 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_cos False)) Or " ^
|
neuper@37991
|
335 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_cos_chain False)) Or " ^
|
neuper@37991
|
336 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_pow False)) Or " ^
|
neuper@37991
|
337 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_pow_chain False)) Or " ^
|
neuper@37991
|
338 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_ln False)) Or " ^
|
neuper@37991
|
339 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_ln_chain False)) Or " ^
|
neuper@37991
|
340 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_exp False)) Or " ^
|
neuper@37991
|
341 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_exp_chain False)) Or " ^
|
neuper@37991
|
342 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_const False)) Or " ^
|
neuper@37991
|
343 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_var False)) Or " ^
|
neuper@37954
|
344 |
" (Repeat (Rewrite_Set make_polynomial False)))) " ^
|
neuper@37993
|
345 |
" )) f_f')"
|
neuper@37954
|
346 |
));
|
neuper@37954
|
347 |
|
neuper@37954
|
348 |
store_met
|
neuper@37972
|
349 |
(prep_met thy "met_diff_equ" [] e_metID
|
neuper@37954
|
350 |
(["diff","differentiate_equality"],
|
neuper@37993
|
351 |
[("#Given" ,["functionEq f_f","differentiateFor v_v"]),
|
neuper@37993
|
352 |
("#Find" ,["derivativeEq f_f'"])
|
neuper@37954
|
353 |
],
|
neuper@37954
|
354 |
{rew_ord'="tless_true", rls' = erls_diff, calc = [],
|
neuper@37954
|
355 |
srls = srls_diff, prls=e_rls, crls=Atools_erls, nrls = norm_diff},
|
neuper@37993
|
356 |
"Script DiffEqScr (f_f::bool) (v_v::real) = " ^
|
neuper@37993
|
357 |
" (let f_f' = Take ((primed (lhs f_f)) = d_d v_v (rhs f_f)) " ^
|
neuper@37991
|
358 |
" in (((Try (Rewrite_Set_Inst [(bdv,v_v)] diff_conv False)) @@ " ^
|
neuper@37954
|
359 |
" (Repeat " ^
|
neuper@37991
|
360 |
" ((Repeat (Rewrite_Inst [(bdv,v_v)] diff_sum False)) Or " ^
|
neuper@37991
|
361 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_dif False)) Or " ^
|
neuper@37991
|
362 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_prod_const False)) Or " ^
|
neuper@37991
|
363 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_prod False)) Or " ^
|
neuper@37991
|
364 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_quot True )) Or " ^
|
neuper@37991
|
365 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_sin False)) Or " ^
|
neuper@37991
|
366 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_sin_chain False)) Or " ^
|
neuper@37991
|
367 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_cos False)) Or " ^
|
neuper@37991
|
368 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_cos_chain False)) Or " ^
|
neuper@37991
|
369 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_pow False)) Or " ^
|
neuper@37991
|
370 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_pow_chain False)) Or " ^
|
neuper@37991
|
371 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_ln False)) Or " ^
|
neuper@37991
|
372 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_ln_chain False)) Or " ^
|
neuper@37991
|
373 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_exp False)) Or " ^
|
neuper@37991
|
374 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_exp_chain False)) Or " ^
|
neuper@37991
|
375 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_const False)) Or " ^
|
neuper@37991
|
376 |
" (Repeat (Rewrite_Inst [(bdv,v_v)] diff_var False)) Or " ^
|
neuper@37954
|
377 |
" (Repeat (Rewrite_Set make_polynomial False)))) @@ " ^
|
neuper@37993
|
378 |
" (Try (Rewrite_Set_Inst [(bdv,v_v)] diff_sym_conv False)))) f_f')"
|
neuper@37954
|
379 |
));
|
neuper@37954
|
380 |
|
neuper@37954
|
381 |
store_met
|
neuper@37972
|
382 |
(prep_met thy "met_diff_after_simp" [] e_metID
|
neuper@37954
|
383 |
(["diff","after_simplification"],
|
neuper@37993
|
384 |
[("#Given" ,["functionTerm f_f","differentiateFor v_v"]),
|
neuper@37993
|
385 |
("#Find" ,["derivative f_f'"])
|
neuper@37954
|
386 |
],
|
neuper@37954
|
387 |
{rew_ord'="tless_true", rls' = e_rls, calc = [], srls = e_rls, prls=e_rls,
|
neuper@37954
|
388 |
crls=Atools_erls, nrls = norm_Rational},
|
neuper@37993
|
389 |
"Script DiffScr (f_f::real) (v_v::real) = " ^
|
neuper@37993
|
390 |
" (let f_f' = Take (d_d v_v f_f) " ^
|
neuper@37954
|
391 |
" in ((Try (Rewrite_Set norm_Rational False)) @@ " ^
|
neuper@37991
|
392 |
" (Try (Rewrite_Set_Inst [(bdv,v_v)] diff_conv False)) @@ " ^
|
neuper@37991
|
393 |
" (Try (Rewrite_Set_Inst [(bdv,v_v)] norm_diff False)) @@ " ^
|
neuper@37991
|
394 |
" (Try (Rewrite_Set_Inst [(bdv,v_v)] diff_sym_conv False)) @@ " ^
|
neuper@37993
|
395 |
" (Try (Rewrite_Set norm_Rational False))) f_f')"
|
neuper@37954
|
396 |
));
|
neuper@37954
|
397 |
|
neuper@37954
|
398 |
|
neuper@37954
|
399 |
(** CAS-commands **)
|
neuper@37954
|
400 |
|
neuper@37954
|
401 |
(*.handle cas-input like "Diff (a * x^3 + b, x)".*)
|
neuper@37954
|
402 |
(* val (t, pairl) = strip_comb (str2term "Diff (a * x^3 + b, x)");
|
neuper@37954
|
403 |
val [Const ("Pair", _) $ t $ bdv] = pairl;
|
neuper@37954
|
404 |
*)
|
neuper@37954
|
405 |
fun argl2dtss [Const ("Pair", _) $ t $ bdv] =
|
neuper@37954
|
406 |
[((term_of o the o (parse thy)) "functionTerm", [t]),
|
neuper@37954
|
407 |
((term_of o the o (parse thy)) "differentiateFor", [bdv]),
|
neuper@37954
|
408 |
((term_of o the o (parse thy)) "derivative",
|
neuper@37993
|
409 |
[(term_of o the o (parse thy)) "f_f'"])
|
neuper@37954
|
410 |
]
|
neuper@38031
|
411 |
| argl2dtss _ = error "Diff.ML: wrong argument for argl2dtss";
|
neuper@37954
|
412 |
castab :=
|
neuper@37954
|
413 |
overwritel (!castab,
|
neuper@37954
|
414 |
[((term_of o the o (parse thy)) "Diff",
|
neuper@37991
|
415 |
(("Isac", ["derivative_of","function"], ["no_met"]),
|
neuper@37954
|
416 |
argl2dtss))
|
neuper@37954
|
417 |
]);
|
neuper@37954
|
418 |
|
neuper@37954
|
419 |
(*.handle cas-input like "Differentiate (A = s * (a - s), s)".*)
|
neuper@37954
|
420 |
(* val (t, pairl) = strip_comb (str2term "Differentiate (A = s * (a - s), s)");
|
neuper@37954
|
421 |
val [Const ("Pair", _) $ t $ bdv] = pairl;
|
neuper@37954
|
422 |
*)
|
neuper@37954
|
423 |
fun argl2dtss [Const ("Pair", _) $ t $ bdv] =
|
neuper@37954
|
424 |
[((term_of o the o (parse thy)) "functionEq", [t]),
|
neuper@37954
|
425 |
((term_of o the o (parse thy)) "differentiateFor", [bdv]),
|
neuper@37954
|
426 |
((term_of o the o (parse thy)) "derivativeEq",
|
neuper@37993
|
427 |
[(term_of o the o (parse thy)) "f_f'::bool"])
|
neuper@37954
|
428 |
]
|
neuper@38031
|
429 |
| argl2dtss _ = error "Diff.ML: wrong argument for argl2dtss";
|
neuper@37954
|
430 |
castab :=
|
neuper@37954
|
431 |
overwritel (!castab,
|
neuper@37954
|
432 |
[((term_of o the o (parse thy)) "Differentiate",
|
neuper@37991
|
433 |
(("Isac", ["named","derivative_of","function"], ["no_met"]),
|
neuper@37954
|
434 |
argl2dtss))
|
neuper@37954
|
435 |
]);
|
neuper@37954
|
436 |
*}
|
neuper@37954
|
437 |
|
neuper@37906
|
438 |
end
|