Decide Whether the Matrices Are Inverses of Each Other $\left.\begin{array}{rr}-2 & 4 \\ 4 & -4\end{array}\right]$

True/False

Decide whether the matrices are inverses of each other. (Check to see if their product is the identity matrix I.) $\left.\begin{array}{rr}-2 & 4 \\ 4 & -4\end{array}\right]$ and $\left[\begin{array}{ll}\frac{1}{2} & \frac{1}{4} \\ \frac{1}{2} & \frac{1}{4}\end{array}\right]$