Lab 16

1. Fill a 2d array with 7s
2. Print out that 2d array, with each row on a line, elements separated by ,
3. Given matrices A and B, find C = A + B
4. Given matrices A and B, find C = A - B
5. Calculate the dot product of two 1d arrays.
6. Multiply a 2D array by a scalar
7. Perform Matrix multiplication on 2 matrices.