A) \[{{a}^{2}}I+abA\]
B) \[{{a}^{2}}I+2abA\]
C) \[{{a}^{2}}I+{{b}^{2}}A\]
D) None of these
Correct Answer: B
Solution :
\[{{(aI+bA)}^{2}}=\left[ \begin{matrix} a & b \\ 0 & a \\ \end{matrix} \right]\,\left[ \begin{matrix} a & b \\ 0 & a \\ \end{matrix} \right]=\left[ \begin{matrix} {{a}^{2}} & 2ab \\ 0 & {{a}^{2}} \\ \end{matrix} \right]={{a}^{2}}I+2abA\].
You need to login to perform this action.
You will be redirected in
3 sec
