engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Mathematics Matrices Types of Matrices
If A = \(\begin{bmatrix} 2&1\\\ 3&-1 \end{bmatrix}\) and I = \(\begin{bmatrix} 1&0\\\ 0&1 \end{bmatrix}\). Which of the following is the zero matrix?
1
A2 - A - 5I
2
A2 + A - 5I
3
A2 + A - I
4
A2 - 3A + 5I