Determine whether the matrices are inverses.
-$$\left[ \begin{array} { r r r }
2 & - 1 & 0 \
- 1 & 1 & - 2 \
1 & 0 & - 1
\end{array} \right] , \left[ \begin{array} { r r r }
1 & - 1 & 2 \
- 3 & - 2 & 4 \
- 1 & 1 & 1
\end{array} \right]$$

Question

Determine whether the matrices are inverses.
-$$\left[ \begin{array} { r r r } 
2 & - 1 & 0 \
- 1 & 1 & - 2 \
1 & 0 & - 1
\end{array} \right] , \left[ \begin{array} { r r r } 
1 & - 1 & 2 \
- 3 & - 2 & 4 \
- 1 & 1 & 1
\end{array} \right]$$

Quizplus · Accepted Answer

To determine if two matrices are inverses, you multiply them. If the product is the identity matrix, they are inverses. Multiplying these matrices does not yield the identity matrix.

Determine Whether the Matrices Are Inverses