Skip to main content
3 of 4
added 4 characters in body; edited title

what is the solutions of functional equation

For complex number $z$, the equation $2^z + 3^z = 2^{1-z}+3^{1-z}$ has a simple solution $z=\frac{1}{2}$.

Are there any other solutions?

do all solutions lie on the critical line?