How to optimize two variable simultaneously in a function?

Following is the function that I want to optimize for two variable theta1_t and theta2_t. There are no constraints so I tried using the fminunc(), but it gives me an error. atk= exp(-theta2_t*k);

btk= (theta1_t/(theta1_t-theta2_t))*(exp(-theta2_t*k)- exp(-theta1_t*k));

func= (atk*y0)+(btk'*u)+gamma where gamma is known.

I have 165 values of theta1_t and theta2_t. I want to choose the optimum one of them. How can I do this? k ranges from 1 to 165.

Answer 1

[Alan Weiss]

Are you doing curve fitting? I mean, you have a lot of data and you are trying to find the best parameters of an equation that fits the data? If so, see this example. If not, then I don't understand your question, so please explain a bit more, and maybe show some code or at least the complete MATLAB error message.

Alan Weiss

MATLAB mathematical toolbox documentation