Given an input, N, output a matrix N x N with each row containing multiples of the first element of each row. This also applies to each column i.e. each column containing multiples of the first element of each column.
EX: >>matrixMultiples(3)
1 2 3
2 4 6
3 6 9>>
This is the same problem as Create times-tables in
http://www.mathworks.com/matlabcentral/cody/problems/33-create-times-tables