Teaching AWES Army Public School TGT Mock Test 2024 Engineering Mathematics Linear Algebra Eigenvalues
If the eigenvalues of a 3 x 3 real matrix of A are 1, 2 and -3. then:
1
\(A^{-1}=-\frac{1}{6}A^2\)
2
\(A^{-1}=\frac{1}{6}(7I-A^2)\)
3
\(A^{-1}=-\frac{1}{6}(7I-A^2)\)
4
\(A^{-1}=-\frac{1}{6}(7I+A^2)\)