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?

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- May 2nd 2009, 03:21 PMrioneyeThe 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?

- May 2nd 2009, 03:26 PMPinkk
Chain rule:

$\displaystyle 2sec(x)\cdot \frac{d}{dx}sec(x)$

$\displaystyle 2sec(x)\cdot sec(x)tan(x)$

$\displaystyle 2sec^{2}(x)tan(x)$ - May 2nd 2009, 03:29 PMrioneye