Mechanical Engineering > GATE 2014 Set-4 > Linear Algebra

Contributed by: Dr. Sarah Chen

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Which one of the following equations is a correct identity for arbitrary 3×3 real matrices P, Q and R?

A

P(Q+R)=PQ+RP

B

(P-Q)²=P²-2PQ+Q²

C

det(P+Q)=det P+det Q

D

(P+Q)²=P²+PQ+QP+Q²

Check Answer

Explanation

Correct : d

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