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If  and  then AB = ?

  • a)
    [0]

  • b)
    B

  • c)

  • d)
    A

Correct answer is option 'D'. Can you explain this answer?
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Ifandthen AB = ?a)[0]b)Bc)d)ACorrect answer is option 'D'. Can you exp...

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Ifandthen AB = ?a)[0]b)Bc)d)ACorrect answer is option 'D'. Can you exp...
By using multiplication of matrices, we know that no of columns of A should be equal to no of rows of B. so the order of matrix AB is1*1. here B is a identity matrix . and any matrix multiplied to identity matrix I is the matrix itself. hence AB=A.
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Ifandthen AB = ?a)[0]b)Bc)d)ACorrect answer is option 'D'. Can you exp...
Just simply multiply row with column (1×1 + 2×0 + 3×0) (1×0 + 2×1 + 3×0) (1×0 + 2×0 +3×1) = [ 1 2 3 ] hence option 'd' is correct .
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