Question

How do you find the inverse of `A=``((-4, 8), (2, -4))`?

Answer 1

I believe `((-4,8),(2,-4))` does not have an inverse.

Explanation:

The rows of `A` are not independent.

Row 2 is simply Row 1 multiplied by `(-1/2)`

Think of this as like being asked to solve
`{(k(ax)+k(by)=c_1),(m(ax)+m(by)=c_2):}`
which has no proper solution.