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J & K CET Engineering J and K - CET Engineering Solved Paper-2008

  • question_answer
    The number of real roots of \[f(x)=0,\]where \[f(x)=(x-1)(x-2)(x-3)(x-4)\] lying the interval \[(1,3)\] is

    A)  \[1\]             

    B)  \[2\]

    C)  \[3\]             

    D)  \[4\]

    Correct Answer: A

    Solution :

    Given,   \[f(x)=(x-1)(x-2)(x-3)(x-4)\] The real roots are \[1,2,3,4.\] Hence, only 2 lies in the interval \[(1,3).\] Hence, option [a] is correct.


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