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Matrix A ha s m rows and n+ 5 columns; m...

Matrix A ha s m rows and n+ 5 columns; matrix B has m rows and `11 - n` columns. If both AB and BA exist, then (A) AB and BA are square matrix (B) AB and BA are of order `8 xx 8` and `3 xx 13`, respectively (C) `AB=BA` (D) None of these

A

AB and BA are square matrix.

B

AB and BA are of order `8xx8` and `3xx13`, respectively

C

AB = BA

D

None of these

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DISHA PUBLICATION-MATRICES-Exercise 1: Concept Builder (Topic 2)
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  18. If X=[{:(3,-4),(1,-1):}],B=[{:(5,2),(-2,1):}]and A=[{:(p,q),(r,s):}] I...

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  19. If {:A=[(costheta,sintheta),(-sintheta,costheta)]:}, " then "underset(...

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  20. If matrix A=([a(i j)])(2xx2) , where a(i j)={1,\ if\ i!=j0,\ if\ i+j ,...

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