Matrix Inverse

Math 115 §

Other content is high school content

Pre-requisite §

Need to have a 2 x 2 matrix to do this by hand

Property §

A * A${}^{-}1$ = Identity Matrix

Read about Identity Matrix in Matrices

Rule §

$[$ a b ${]}^{-}1$ = $[$ d -b $]$ $/$ det$[$ a b $]$ c d -c a c d To learn how to find determinant refer to Matrix Determinants

Solve this and you will find the inverse of a matrix