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Math Help - hyperbolic function

  1. #1
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    hyperbolic function

    This one is causing me quite the trouble.


    \int_\frac{-\pi}{4}^\frac{\pi}{4} cosh(tan\theta)sec^2 d\theta


    im thinking
    \frac{e^x+e^-x}{2} but im cant seem to make it work, any help would be appreciated.

    Thanks




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  2. #2
    Senior Member DeMath's Avatar
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    Quote Originally Posted by Itsygo View Post
    This one is causing me quite the trouble.


    \int_\frac{-\pi}{4}^\frac{\pi}{4} cosh(tan\theta)sec^2 d\theta


    im thinking
    \frac{e^x+e^-x}{2} but im cant seem to make it work, any help would be appreciated.

    Thanks
    Hint

    (\tan\theta)'=\sec^2 \theta
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