12th Class Mathematics Determinants

  • question_answer 1)
    For the matrix  find the numbers a and b such that A2 + aA + bI  = 0.  

    Answer:

                 A2 = A.                       Given A2 +aA + bI = 0                                                   On equating, we get             4 + a = 0 and 3 + a + b = 0                          


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