J & K CET Engineering J and K - CET Engineering Solved Paper-2012

  • question_answer
    If A is a matrix of order n, then determinant \[|-A|\] is equal to

    A)  \[|A|\]             

    B)  \[-|A|\]

    C)  \[{{(-1)}^{n}}|A|\]        

    D)  \[n\,|A|\]

    Correct Answer: C

    Solution :

    Since, A is a matrix of order n. \[\therefore \] \[|-A|={{(-1)}^{n}}|A|\]


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