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Thread: Need help with a definite integral problem

  1. #1
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    Need help with a definite integral problem

    Need help with a definite integral problem-screen-shot-2017-11-20-10.42.03-am.png
    your help would be appreciated
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    Re: Need help with a definite integral problem

    Quote Originally Posted by BlackRaven View Post
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    your help would be appreciated
    Because $f$ is an even function we have $\int_{ - 2}^2 {f(x)dx} = 2\int_0^2 {f(x)dx}$
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    Re: Need help with a definite integral problem

    I know. I just can't figure out how to find f(x) for the first integal... Is it just 16?
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    Re: Need help with a definite integral problem



    $\displaystyle \int_{-2}^2 f(x) - 8 \, dx = \int_{-2}^2 f(x) \, dx - \int_{-2}^2 8 \, dx = 2\int_0^2 f(x) \, dx - 2\int_0^2 8 \, dx = 2\int_0^2 f(x) \, dx - 32 = 8$

    finish it ...
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