Determine whether the two matrices are inverses of each other by computing their product.
-$\left[\begin{array}{ll}-5 & 1 \ -7 & 1\end{array}\right],\left[\begin{array}{ll}\frac{1}{2} & -\frac{1}{2} \ \frac{7}{2} & -\frac{5}{2}\end{array}\right]$

Question

Quizplus · Accepted Answer

The product of the two matrices is the identity matrix $\left[\begin{array}{ll}1 & 0 \ 0 & 1\end{array}\right]$, confirming they are inverses.

Determine Whether the Two Matrices Are Inverses of Each Other