Re: [Maxima] Numerical function evaluation with complex numbers
- Subject: Re: [Maxima] Numerical function evaluation with complex numbers
- From: go_furuya at infoseek
- Date: Thu, 27 Sep 2001 16:10:29 +0900
hi toy
>
>
> Try this:
>
> (C3) sin(1+%i);
>
> (D3) SIN(%I + 1)
> (C4) ev(%,numer);
>
> (D4) SIN(%I + 1)
>
(C3) trigexpand(sin(1+%i);
(D3) %I COS(1) SINH(1) +COSH(1) SIN(1)
(C4)%,numer ;
OK
so i think that you define sin1(Z),
(C5) sin1(z) := trigexpand(sin(rectform(z));
(C6)sin1((1+%i)/sqrt(2));
(d6) %ICOS(1/sqrt(2))SINH(1/sqrt(2))+COSH(1/sqrt(2))SIN(1/sqrt(2))
gosei furuya (go_furuya@infoseek.jp)
> Should maxima return something more like
>
> 1.2984575814159773 + 0.6349639147847361d0 %I
>
> instead?
>
> I rather miss this, especially since Lisp handles complex numbers.
>
> Ray
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>