J & K CET Engineering J and K - CET Engineering Solved Paper-2014

  • question_answer
    If \[f(x)={{x}^{3}}-1,\] then find \[[f(3)+f(2)]/11\]

    A) \[1\]      

    B) \[2\]      

    C) \[3\]      

    D)  \[4\]

    Correct Answer: C

    Solution :

    Given,  \[f(x)={{x}^{3}}-1\] \[\therefore \] \[f(3)={{(3)}^{3}}-1=27-1=26\] \[f(2)={{(2)}^{3}}-1=8-1=7\] Now, \[\frac{f(x)+f(2)}{11}=\frac{26+7}{11}=\frac{33}{11}=3\]


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