3. Generating simple vectors and matrices

A. How do I generate a vector or matrix ones of size x by y (x rows, y columns)?

B. How do I generate an identity matrix of size x by y?

C. How do I generate a vector or matrix of zeros of size x by y?

D. How do I generate a vector containing all integers between x and y (including x & y)?

E. How do I generate a vector containing all integers between x and y, spaced by z?

F. How do I generate a matrix of size x by y of random numbers uniformly distributed between 0 and 1?

G. How do I generate a matrix of size x by y of normally distributed random numbers?

H. How do I generate a random arrangement of numbers between 1 and X?

I. How do I generate a matrix of size x by y of random numbers uniformly distributed between a and b?

J. How do I generate a matrix of size x by y of normally distributed random numbers with a mean of a and a standard deviation of b?