Robert Marik wrote:
> Dear members of maxima list
>
> Maxima cannot change variables in the following integral
>
> changevar('integrate(
> (sin(x)+cos(x))/sqrt(sin(x)-cos(x)),x
> ),sin(x)-cos(x)=t,t,x);
Maxima can already evaluate the integral. Any particular reason why you
want to use this substitution to do it?
>
> the problem is probably caused by the fact that maxima cannot solve
> sin(x)+cos(x)=t with respect to t
>
> Is there any workaround for this? Is there any way how to transform the
> integral of f'(x)g(f(x)) into g(t) ?
> here f' denotes derivative.
I think maxima already knows how to do this, but I'm not 100% sure.
Ray