If , then…

MATHEMATICS · Single correct · CBSE · Mathematics · Matrices · Matrices

Problem

If A=[2−2−4−1341−2−3]A=\begin{bmatrix}2&-2&-4\\-1&3&4\\1&-2&-3\end{bmatrix}, then AA is: (a) Idempotent matrix (b) Nilpotent matrix of order 22 (c) Involutory matrix (d) Nilpotent matrix of order 33

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