Adding differentiation/integration rules.. and simplification too
Subject: Adding differentiation/integration rules.. and simplification too
From: Richard Fateman
Date: Tue, 25 Sep 2001 10:13:05 -0700
You haven't said what you want done. identities
go both ways. if you want to substitute
(1-cn(u)/(1+dn(u)) for sn(u/2)^2 then try
ratsubst(..., sn(u/2)^2, expression).
Also, for specific u or "any" u?
You could look at the code for trigsimp.
Also, for sin/cos/tan etc there are complex exponentials
which provide a clue to canonical forms. Exponentialize
does this..
Maybe there
is something similar for sn cn etc.
RJF
Raymond Toy wrote:
>
> I now have a final question. sn has these properties:
>
> sn(u/2)^2 = (1-cn(u))/(1+dn(u))
>
> sn(2*u) = 2*sn(u)*cn(u)*dn(u)/(1-m*sn(u)^4)
>
> How do I get maxima to understand this? However, I don't want this
> applied all of the time, just like the corresponding trig functions.
>
> Thanks!
>
> Ray
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