CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2005

  • question_answer
    If\[f\]is continuous function, then:

    A)  \[\int_{-2}^{2}{f(x)}dx=\int_{0}^{2}{[f(x)-f(-x)]}\,dx\]

    B)  \[\int_{-3}^{5}{2f(x)}dx=\int_{-6}^{10}{f(x-1)}\,dx\]

    C)  \[\int_{-3}^{5}{f(x)\,}dx=\int_{-4}^{4}{f(x-1)}\,dx\]

    D)  \[\int_{-3}^{5}{f(x)\,}dx=\int_{-2}^{6}{f(x-1)}\,dx\]

    E)  \[\int_{-3}^{5}{f(x)\,}dx=\int_{-6}^{10}{f\left( \frac{x}{2} \right)}\,dx\]

    Correct Answer: B

    Solution :

    \[\because \]\[f(x)\]is a continuous function. Let us consider\[f(x)=x\] \[\therefore \]  \[\int_{-3}^{5}{2x}\,dx=16\] and        \[\int_{-6}^{10}{(x-1)}\,dx=16\] \[\therefore \]  \[\int_{-3}^{5}{2f\,(x)}\,dx=\int_{-6}^{10}{f(x-1)}\,dx\]


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