Write in Matlab!!!!
Mesh and contour graphs of the scalar function given below with 0.1 steps between -1 and 1 and calculate the gradient of the function and draw a graph of the vector field. Subplot all three plots. Make sure that they are placed one under the other on the same figure. To calculate the gradient, you can use the gradient function in Matlab.
f(x, y) = sin(x) * cos(y)