I have this equation with complex parameters m and e (k is constant):
sqrt(m/e)*tanh(i*k*sqrt(m*e))=1
and I know that if imag(m)>3*real(m) and real(e)>3*imag(e)
the solution is approximated by the equations:
imag(m)=1/k
and
real(e)=3*real(m)
but I can't understand why.
Is there anyone that can help me?
thank you in advance!