Question

How do you find the inverse of `A=``((1, 2), (1, 3))`?

Answer 1

`=[(3,-2),(-1,1)]`

Explanation:

`A^(-1)=1/(det(A))*adj(a)`

`=1/(1(3)-1(2))[(3,-2),(-1,1)]`

`=[(3,-2),(-1,1)]`