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VIT Engineering VIT Engineering Solved Paper-2014

  • question_answer
    If the system of equation x + ky ? z = 0, 3x ? ky ? z = 0 and x ? 3y + z = 0, has non-zero solution, then k is equal to

    A) -1                                           

    B) 0

    C) 1             

    D) 2

    Correct Answer: C

    Solution :

    The system has non-zero solution, if                         \[=2\left( \frac{5}{4}-1 \right)\] \[=2\times \frac{1}{4}\]    \[=0.05\Omega \] \[\Omega \]                                       - 6k + 6 = 0 \[\Omega \]                                            k = 1


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