1 (* Title: partial fraction decomposition
3 (c) due to copyright terms
6 "--------------------------------------------------------";
7 "table of contents --------------------------------------";
8 "--------------------------------------------------------";
9 "----------- why helpless here ? ------------------------";
10 "----------- why not nxt = Model_Problem here ? ---------";
11 "--------------------------------------------------------";
12 "--------------------------------------------------------";
13 "--------------------------------------------------------";
16 "----------- why helpless here ? ------------------------";
17 "----------- why helpless here ? ------------------------";
18 "----------- why helpless here ? ------------------------";
19 val fmz = ["filterExpression (X z = 3 / (z - 1/4 + -1/8 * (1/(z::real))))",
20 "stepResponse (x[n::real]::bool)"];
21 val (dI,pI,mI) = ("Isac", ["inverse", "Z_Transform", "SignalProcessing"],
22 ["SignalProcessing","Z_Transform","inverse"]);
23 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI,pI,mI))];
24 val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Add_Given";
25 val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Add_Find";
26 val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Specify_Theory";
27 val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Specify_Problem";
28 val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Specify_Method";
29 val (p,_,f,nxt,_,pt) = me nxt p [] pt; "nxt = Apply_Method";
30 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
31 "nxt = Rewrite (ruleZY, Inverse_Z_Transform.ruleZY) --> X z = 3 / (z - 1 / 4 + -1 / 8 * (1 / z))";
32 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
33 "nxt = Rewrite_Set norm_Rational --> X' z = 3 / (z * (z - 1 / 4 + -1 / 8 * (1 / z)))";
34 "~~~~~ fun me, args:"; val ((_,tac), (p:pos'), _, (pt:ptree)) = (nxt, p, [], pt);
35 val ("ok", (_, _, ptp)) = locatetac tac (pt,p)
37 "~~~~~ fun step, args:"; val (((ip as (_,p_)):pos'), ((ptp as (pt,p), tacis):calcstate)) =
38 (p, ((pt, e_pos'),[]));
39 val pIopt = get_pblID (pt,ip);
40 ip = ([],Res); "false";
42 pIopt; (* = SOME ["inverse", "Z_Transform", "SignalProcessing"]*)
43 member op = [Pbl,Met] p_ andalso is_none (get_obj g_env pt (fst p)); "false";
44 (*nxt_solve_ (pt,ip); "WAS isalist2list applied to NON-list 'no_meth'"
45 THIS MEANS: replace no_meth by [no_meth] in Script.*)
46 (*WAS val ("helpless",_) = step p ((pt, e_pos'),[]) *)
47 (*WAS val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Empty_Tac instead SubProblem";*)
49 "----------- why not nxt = Model_Problem here ? ---------";
50 "----------- why not nxt = Model_Problem here ? ---------";
51 "----------- why not nxt = Model_Problem here ? ---------";