The matrix A = \(\begin{pmatrix}ab&b^2 \\-a^2 &-ab\end{pmatrix}\)isA. – InterviewSolution

1.	The matrix A = \(\begin{pmatrix}ab&b^2 \\-a^2 &-ab\end{pmatrix}\)isA. idempotent B. Orthogonal C. Nilpotent D. None of these
Answer» Matrix A is said to be nilpotent since there exist a positive integer k =1 such that Ak is zero matrix.

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