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Mathematics - Matrices Question with Solution | TestHub

MathematicsMatricesGeneralMedium2 minPYQ_2006

MathematicsMediumsingle choice

Let $A = (1324)$ and $B = (a 0 0 b), a, b \in N$ . Then

Options:

Answer:

D

Solution:

$A = [1324] B = [a 0 0 b]$ $A B = [a 3 a 2 b 4 b]$ $B A = [a 0 0 b] [1324] = [a 3 b 2 a 4 b]$ $A B = B A$ only when $a = b$

Stream:JEESubject:MathematicsTopic:MatricesSubtopic:General

⏱ 2mℹ️ Source: PYQ_2006

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