Question

Using Matlab,

3. Given the sizes of each of the following matrices, which of the following operations are possible? a. A+B b. A*B c. A*C d. B*C e. A*V f. B*V g. V+W h. Y+Z'

Answer 1

A: m times n B: n times m C: n times p D: p times n V: m times 1 W: 1 times m Y: p times 1 Z: 1 times p A + B is not possible as A, B are not of same size A*B is possible and its size is m times m A*C is possible and its size is m times p B*C is not possible as no of columns of B and no of rows of c are not equal A*V is doesn't possible B*V is possible and its size is n times 1 V + W is not possible Y + Z' is possible as y and z' are of same size i.e p times 1 V*W is possible and its size m times m