[CAS] operation ANS

12092016, 01:17 PM
(This post was last modified: 12092016 04:38 PM by compsystems.)
Post: #1




[CAS] operation ANS
Hello
Help Ans Says Quote:case 1: In CAS view, Ans returns the last result (answer) in the CAS history. In case 3 the lists must also be mentioned. A better help, please to include it in an update case :=x3: In CAS view, if Ans is a matrix/list, Ans(m,[n]) returns the element in row m and the element of column n, if is present. case 1: 6*{a,b,c} > {a*6,b*6,c*6} Ans > {a*6,b*6,c*6} // ok (Last answer) case 2: f(x):=x+3 (x)>x+3 Ans(y) > y+3 // ok (evaluation) case3: 6*[[a,b],[b,c],[c,d]] > [[a*6,b*6],[b*6,c*6],[c*6,d*6]] Ans(3) > [c*6,d*6] // Ok (Extraction of elements) 6*[[a,b],[b,c],[c,d]] > [[a*6,b*6],[b*6,c*6],[c*6,d*6]] Ans(3,2) > d*6 // Ok (Extraction of elements) case3: 6*{a,b,c} > {a*6,b*6,c*6} Ans(3) > c*6 // Ok (Extraction of elements) case3: r:=solve(sin(t)=0,t); > {n_1*π} Ans(1); > n_1*π // Ok (Extraction of elements) r:=solve(sin(t)=0,t); > {n_2*π} Ans(1)(n_2 = x) > π*x // Ok (Extraction of elements, then substitution or evaluation) r:=solve(sin(t)=0,t); > {n_3*π} Ans(1)(n_3 = x) > n_3(1)*π(1) // ?? I think this is not doing what it needs to do. n_3*π (n_3 = x) > π*x 

12092016, 09:31 PM
Post: #2




RE: [CAS] operation ANS
(12092016 01:17 PM)compsystems Wrote: r:=solve(sin(t)=0,t); > {n_3*π} There was a thread about the priority of the "where" function some time ago: http://www.hpmuseum.org/forum/thread242...e+function If you have already stored the result as 'r' then why not simply use: r(n_3=x) ? Graph 3D  QPI  SolveSys 

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