# How do you find A^2 given A=((1, 3, 2))?

Sep 3, 2016

See Explanation.

#### Explanation:

Let us recall that $\left[M\right]$ is an $m \times n$ matrix, and $\left[N\right]$ is an $n \times p$

matrix, then, we can perform their multiplication in that order and

have $\left[M N\right]$ an $m \times p$ matrix.

Accordingly, [A]^2 is undefined.

If we treat $A$ as $\vec{A}$, then, ${\vec{A}}^{2} = \vec{A} \cdot \vec{A}$

$= {1}^{2} + {3}^{2} + {2}^{2} = 14$.