can someone help with MATLAB. thank you.

I. a6- (a6 is a 4 by 4 matrix full of 6) (Hint: use the function ones)] b6 -a 7 by 8 matrix full of random numbers. (Hint: look for the rand function in Matlab help) III c6 the element-wise multiplication of a6 by itself II. IV d6-the mean of a2 multiplied by a6 V. e6-a 4 by 4 zero matrix with diagonal value of 9 (Hints: look for zeros and eye function in Matlab help)