Thank you guys "solveradcan : true" did the trick.
I have another question:
When I solve sin(x)=0 for x then, I get x=0
(%i3) solve(sin(x)=0,x);
solve: using arc-trig functions to get a solution.
Some solutions will be lost.
(%o3) [x = 0]
My question is how to get a more general solution like x=2*%pi*n with n in Z
Thanks
Waldemar
2012/12/19 Volker van Nek <volkervannek at gmail.com>:
> solve(x^log(x) = %e), solveradcan : true