Asked by Moses

Consider the following Matrix:
A= [-2 0 1
-1 -2 1
1 -1 0 ]

Choose the correct description of
A.

Find A−1 if it exists.

Multiple Choice homework question:

1) A is Nonsingular; that is, it has an inverse.

A^-1=

2) A is singular; that is, its inverse doesn't exist.

Thanks!