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12th Class Mathematics What Can You Become

  • question_answer 62)
    Matrices A and B will be inverse of each other only if (a) AB = BA (b) AB = BA = O (c) AB = O, BA =I (d) (b) AB = BA = I.  

    Answer:

    We know that product of matrix and its inverse is a unit matrix.                   So, (d) is correct


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