Question

How do you find the inverse of `A=``((0, 1, 0), (0, 1, -4), (0, 0, 1))`?

Answer 1

This matrix has no inverse since its determinant is `0`

Explanation:

`abs((0,1,0),(0,1,-4),(0,0,1)) = 0` since the first column is `0`

Hence `A` has no inverse.