Calculate$| \mathbf { A } |$ -$$A = \left| \begin{array} { r r r }
1 & 1 & 4 \
2 & - 2 & 1 \
- 1 & - 4 & 1
\end{array} \right|$$

Question

Calculate$| \mathbf { A } |$ -$$A = \left| \begin{array} { r r r } 
1 & 1 & 4 \
2 & - 2 & 1 \
- 1 & - 4 & 1
\end{array} \right|$$

Examlex · Accepted Answer

The Answer of Calculate$| \mathbf { A } |$ -$$A = \left| \begin{array} { r r r } 
1 & 1 & 4 \
2 & - 2 & 1 \
- 1 & - 4 & 1
\end{array} \right|$$

Calculate $| \mathbf { A } |$ - $A = \left| \begin{array} { r r r } 1 & 1 & 4 \\2 & - 2 & 1 \\- 1 & - 4 & 1\end{array} \right|$