JEE Main & Advanced Mathematics Determinants & Matrices Question Bank Special types of matrices, Transpose, Adjoint and Inverse of matrices

  • question_answer
    If for the matrix A, \[{{A}^{3}}=I\], then \[{{A}^{-1}}=\] [RPET 2002]

    A) \[{{A}^{2}}\]

    B) \[{{A}^{3}}\]

    C) A

    D) None of these

    Correct Answer: A

    Solution :

    \[{{A}^{-1}}={{A}^{2}}\], because\[{{A}^{3}}=I\].


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