Please show completely all handwritten calculations and the MATLAB code in details clearly:

For a gridded area on the xy plane, bounded by the limits 2x2,3y3, where the grid points are in the following from 2,2+x,,x/2,x/2,,2x,2 for x and 3,3+y,,y/2,y/2,,3y,3 for y. Assume that the units are meters and choose x, and y to give you 40 and 60 points along the x and y axes, respectively. At these grid points evaluate the following function, cosRejkR where, R=x2+y2=tan1(xy)k=2 and then create for this function 3D graphs using the surf MATLAB command for the a) magnitude, b) phase, c) real part, and d) imaginary part