yadi

Hi
I want to solve equation like below with using Matlab - fminsearch function- but results shows that if initial value changes then results for function will be different. Can you help me to solve the nonlinear complex equation like this?(a is complex =a’+ia”)
f(a)=(a-i+1)(a+i-1)/(a^2+1)=0
For other samples when f(x)=f’(x)+if”(x) too.