using matlab, please do this questions! i am mainly stuck on part d and e like how do you reflect it diagonally??

a. Create a 4 by 5 matrix M of random real numbers uniformly distributed between 0 and 1 . b. Replace the 5th column of M by a column of zeros. c. Delete the 2nd column of M. d. Reflect the matrix M about its main diagonal. e. Reflect the matrix M about its opposite diagonal. Figure 1: example of main diagonal (in red) vs an opposite diagonal (in blue)