Chapter 4.1, Problem 4CYU

To determine

To find: Thegiven element in the matrix.

Answer to Problem 4CYU

The given element in the matrixis $-8$ .

Explanation of Solution

Given information:

The matrix is $\left[\begin{array}{cccc}1& -6& x& -4\\ -2& 3& -1& 9\\ 5& -8& 2& 12\end{array}\right]$ and the element is $a_{32}$ .

Calculation:

Consider the matrix.

  $\left[\begin{array}{cccc}1& -6& x& -4\\ -2& 3& -1& 9\\ 5& -8& 2& 12\end{array}\right]$

The element $a_{32}$ is the element of third row and second column.

Thus, the elementis $-8$ .