How do you find the inverse of #A=##((-3, -1), (-7, 8))#?
An easy way to find the inverse of a 2x2 square matrix is to apply the following formula*:
For this problem, we have
We can find the determinant:
Plugging in our values, we have:
*Note: This formula only works for 2x2 matrices and does not work for larger matrices