Having trouble coding these objective functions to later use them in Grey Wolf Optimizer

Hey all, I'm having some trouble to code some objective functions to MATLAB. I will later use these in Grey Wolf Optimizer algorithm. My main questions are a) Obviously how to write these functions in code and then later call them in the algorithm. b) How should I approach the whole algorithm any recommendations are welcome. This is for an assignment and I want to learn it to the little details if possible. Here are the functions;

The mishra function has the Range of <-10,10>.