Question
Find the multiplicative inverse of each matrix, if it exists$$\left[\begin{array}{cc}{-3} & {7} \\ {9} & {2}\end{array}\right]$$
Step 1
In a 2x2 matrix, the elements are usually denoted as follows: $$\left[\begin{array}{cc}{a} & {b} \\ {c} & {d}\end{array}\right]$$ So, in the given matrix, $a = -3$, $b = 7$, $c = 9$, and $d = 2$. Show more…
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