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Find the standard derivative of $\; \large \frac{d(sec^{-1}x)}{dx}$, given $|x|>1$

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Answer: $ \large \frac{d(sec^{-1}x)}{dx} = \frac{1}{|x| \sqrt (x^2-1)}$
answered Apr 4, 2013 by balaji.thirumalai
 
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