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Let A and B are two squar matrices of sa...

Let A and B are two squar matrices of same order such that AB = B and BA = A , then `A ^(2) + B ^(2)` is equal to

A

2 AB

B

2BA

C

A + B

D

AB

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The correct Answer is:
C
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NTA MOCK TESTS-NTA TPC JEE MAIN TEST 53-MATHEMATICS
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  7. An ellipse (x ^(2))/(a ^(2)) + (y ^(2))/( b ^(2)) =1 and the hyperbola...

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  15. If the tangent to the curve y = e ^( kx) at M (0,1) meet the x-axis at...

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  16. The value of int (cot x )/( sqrt ( 5 + 9 cot ^(2) x )) dx is equal to ...

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  17. The value of cot ^(4) ""(pi)/(16)- 4 cot ^(3) ""(pi)/(16) - 6 cot ^...

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  18. If theta (1), theta (2), theta (3)in [0, 3pi], then the number of orde...

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  19. The x satisfying sin ^(-1) x + sin ^(-1) (1 -x ) = cos ^(-1) x are

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  20. Which of the following is a contradiction ?

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