Have you tried ?
I have the equation tanh(X) = T . e^(jf)
tanh - is hyperbolic tang.
X is complex number X = a + jb
T.e^(jf) - is a known complex number = T.cos(f)+j.T.sin(f)
I need clear decision for a=? and b=?
a - real part
b - imaginary part
only like function of T anf f.