Multivariate Nonlinear optimization using Marquardt Method

We use the power of symbolic toolbox in order to find the optimal point in an arbitrary multivariate function
Change the following code based on your objective function and run the program

%Function F in Symbolic Format
a='(x1^2+x2-11)^2+(x1+x2^2-7)^2';

The code will iterate and converge to x and y of the optimal point