Class 12

22. Matrices and Determinants question bank (Maths)

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Q1.

A and B are square matrices with the same order. If AB = BA and A and B are skew hermitian, then  

(A)
A + B is skew hermitian
(B)
AB is skew hermitian
(C)
BA is hermitian
(D)
All are true
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Q2.

If AB = A and BA = B, then  

(A)
A²B = A²
(B)
B²A = B²
(C)
ABA = A
(D)
BAB = B
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