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Math Help - Integral Help

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    Integral Help

    integral ( tan^2 x ) dx
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  2. #2
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    Quote Originally Posted by smitty946 View Post
    integral ( tan^2 x ) dx
    This is an easy one.

    Use the Pythagorean Identity,
    tan^2 x = sec^2 x -1

    Thus,
    INT (sec^2 x -1) dx = tan x - x +C
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    thanks
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