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);
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 suppose that it is difficult to write a function which solves similar
problem in general, but maybe someone worked in this direction.
Thank you
Robert Marik