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J & K CET Engineering J and K - CET Engineering Solved Paper-2005

  • question_answer
    If X is a square matrix of order \[3\times 3,\lambda \] is a scalar, then adj \[(\lambda x)\]is equal to   

    A)  \[\lambda \,\,adj\,\,(X)\]

    B)  \[{{\lambda }^{3}}\,\,adj\,\,(X)\]

    C)  \[{{\lambda }^{2}}\,\,adj\,\,(X)\]

    D)  \[{{\lambda }^{4}}\,\,adj\,\,(X)\]

    Correct Answer: C

    Solution :

    adj \[(\lambda X)={{\lambda }^{2}}\,adj\,(X).\]


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