> What are the dimensions of this matrix product? C4x2 and D2x1?

What are the dimensions of this matrix product? C4x2 and D2x1?

Posted at: 2014-12-18 
A) 2 by 2

B) No matrix product is possible

C) 4 by 2

D) 4 by 1

When you multiply an m x n matrix by a n x p matrix, the result is m x p.

Compare to your numbers.

A) 2 by 2

B) No matrix product is possible

C) 4 by 2

D) 4 by 1