HW1

A)  Read the matrix HW1.mat into the software package of your choice 
and call it A.
B)  Plot the matrix and tel me its size.
C)  Transpose the matrix and plot the transpose 
D)  Form a vector "x" of all ones of the appropriate length
and compute and plot A.x. Provide an interpretation of "A.x".
E)  Make a matrix of your choice and save it as a ".mat" file.
F)  Check you can reimport your ".mat" file. 
G)  Print enough stuff to convince me you did A-F.