Hi, I would really appreciate it if you could help me out with this.
I have a function of two variables. For some parameters, the function is, in general, complex, but I need only the real part. When I take the partial derivative of the real part of the function w.r.t. the two variables, it shows Re'[....] as the output. So then, I make an interpolating function considering only the real part. Then, I took the derivatives and set them to zero to find the extremes. Then it gives me back the equations again.
I have tried solving using interpolation in the case of one variable and got the extremas. However, in the case of two variables, I am facing this issue. Is there any way I can get extra points?