> From: Raymond Toy <toy at rtp>
> Date: 24 Sep 2001 13:34:10 -0400
>
>
> While learning and playing around with elliptic functions and
> integrals, I'm getting tired of manually looking up the rules for
> differentiation and integration of elliptic functions.
>
> Can someone tell me how to get maxima to understand this?
>
> For example
>
> diff(sn(u),u) = cn(u)*dn(u),
> diff(cn(u),u) = -sn(u)*dn(u),
>
Note that dn, cn, etc are used by maxima's ellipt
package. Unfortunately it is used for numerical calclation only. So
let us defne sn1, dn1, etc. Then you can say:
(C12) gradef(sn1(u),cn1(u)*dn1(u));
(D12) sn1(u)
(C13) diff(sn1(x),x);
(D13) cn1(x) dn1(x)
--
Good luck
-Boris