JEE Main & Advanced Mathematics Determinants & Matrices Question Bank Mock Test - Determinants

  • question_answer
    If , then z is

    A)  purely real

    B)  purely imaginary

    C)  \[a+ib,\]where \[a\ne 0,\]\[b\ne 0,\]

    D)  \[a+ib,\]where b = 4

    Correct Answer: B

    Solution :

    [b]                                     (Taking transpose) Hence, z is purely real.


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