Question
If $\mathrm{A}$ and $\mathrm{B}$ are two square matrices of order 4 such that $|\mathrm{A}|=-2$ and $|\mathrm{B}|=5$, then $|4 \mathrm{AB}|$ is(a) $-80$(b) $-160$(c) $-2560$(d) $-256$
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If $\mathrm{A}$ and $\mathrm{B}$ are two square matrices of order 4 such that $|A|=-2$ and $|B|=5$, then $|4 A B|$ is (A) $-80$ (B) $-160$ (C) $-2560$ (D) $-256$
Engineering Mathematics
Linear Algebra
If $\mathrm{A}$ and $\mathrm{B}$ are two square matrices of order 4 such that $|\mathrm{A}|=-2$ and $|\mathrm{B}|=5$, then $|4 \mathrm{AB}|$ is (a) $-80$ (b) $-160$ (c) $-2560$ (d) $-256$
$\mathrm{A}$ and $\mathrm{B}$ are two square matrices of same order. If $\mathrm{AB}=\mathrm{B}^{-1}$, then $\mathrm{A}^{-1}=$ ____. (1) BA (2) $\mathrm{A}^{2}$ (3) $\mathrm{B}^{2}$ (4) B
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