Question

Help in the question above please

Answer 1

A)11

Explanation:

These are matrices one dimensional with one column and 3 rows each.

-The product of the matrices is obtained by multiplying the correspond values and summing up;

`pq=\left[\begin{array}{ccc}3\\2\\-1\end{array}\right] *\left[\begin{array}{ccc}5\\-1\\2\end{array}\right] \\\\\\\\=(3* 5)+(2* -1)+(-1* 2)\\\\=15+-2+-2\\\\=11`

Hence, the product of p and q is 11