If A= [ array cc p & q -q & p array ], B= [ array cc r & s -s & r array ] then
Mathematics · JEE Main · NTA Exams — Matrices and Determinants
\(\text { If } A=\left[\begin{array}{cc}
p & q \\
-q & p
\end{array}\right], B=\left[\begin{array}{cc}
r & s \\
-s & r
\end{array}\right] \text { then }\)
- AB = BA
- AB ≠ BA
- AB = – BA
- none of these
Answer
(A) AB = BA
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