**Find the eignevalues and eingenvectors for the matrix below. DO NOT compute them directly by computing the matrix:**

A-1

A-1

We need to find some kind of demonstration to see if the eignevalues of A-1 are the same, opposite or inverse (or whatever) as those of matrix A

Suppose that the eignvalues are 1,2,3 and the eignvectors are [1,1,0], [0,1,0],[ 3,-1,2] ( in columns)

Does someone has any idea??

Thank you

B