How do you find the inverse of #((1, -1, 0), (0, 1, 0), (0, 0, 1))#?
Extend this matrix by appending an identity matrix on the right side:
Perform standard row operations to convert the left side into an identity matrix.
In this case all that is needed is to add Row 2 to Row 1:
and the left side is the required inverse.