TS ICET 23 May 2018 Shift 2 Paper

Question : 133 of 200

Marks: +1, -0

If A and B are matrices such that AB= B and BA= A. then

\A^2+\B^2

Solution:

We know that AB = B; BA = A then

A^2 = A; B^2 = B

∴A^2+B^2=A+B

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