Decide Whether or Not the Matrices Are Inverses of Each

question 122

Multiple Choice

Decide whether or not the matrices are inverses of each other.
- $$\left[ \begin{array} { l l } - 5 & 1 \\- 7 & 1\end{array} \right] \text { and } \left[ \begin{array} { l l } \frac { 1 } { 2 } & - \frac { 1 } { 2 } \\\frac { 7 } { 2 } & - \frac { 5 } { 2 }\end{array} \right]$$

• A) Yes
• B) No

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