Using fzero: Undefined function or method 'isfinite' for input arguments of type 'sym?

I think you've mistaken function handles with symbolic representation.

Rasman already gave you one solution to your problem, but I thought I'd explain in more detail why you were getting your error and give you another possible solution.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.