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Thread: The derivative of (secx)^2?

  1. May 2nd 2009, 03:21 PM #1
    rioneye
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    The derivative of (secx)^2?

    I know this is a lot simpler than I think it is, but I just had a brain lapse . Do any of you guys know what the he derivative of (secx)^2 is?
    Last edited by mr fantastic; May 2nd 2009 at 03:33 PM.
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  2. May 2nd 2009, 03:26 PM #2
    Pinkk
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    Chain rule:

    2sec(x)\cdot \frac{d}{dx}sec(x)
    2sec(x)\cdot sec(x)tan(x)
    2sec^{2}(x)tan(x)
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  3. May 2nd 2009, 03:29 PM #3
    rioneye
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    Quote Originally Posted by Pinkk View Post
    Chain rule:

    2sec(x)\cdot \frac{d}{dx}sec(x)
    2sec(x)\cdot sec(x)tan(x)
    2sec^{2}(x)tan(x)
    Haha, I knew it would be simple. Thanks man
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