Exercise 2.5.16

Answers

\begin{aligned} [\begin{matrix} a & b \\ c & d \end{matrix}] [\begin{matrix} d & - b \\ - c & a \end{matrix}] = [\begin{matrix} ad - bc & 0 \\ 0 & ad - bc \end{matrix}] . \end{aligned}

The inverse of each matrix is the other divided by $ad - bc$ .

mathchakra

2021-12-19 17:05