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KVPY Sample Paper KVPY Stream-SX Model Paper-6

  • question_answer
    Let A be a matrix of order 3 and let \[\Delta \] denote the value of determinant A. Then det \[(-\,2A)=\]

    A) \[-\,8\Delta \]

    B)        \[-\,2\Delta \]

    C) \[2\Delta \]

    D) \[8\Delta \]

    Correct Answer: A

    Solution :

    \[(-\,2\,A)={{(-\,2)}^{3}}\Delta =-\,8\,\Delta \]


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