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Calculus help: What is the second derivative of this natural log function?

0 votes

9ln(sec(x)+tan(x))
I'm looking for the second derivative and I think I did it wrong...

second-derivative

asked Aug 12, 2014 in CALCULUS by anonymous

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1 Answer

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The function 9ln[sec(x) + tan(x)]

Apply derivative with respect of x.

Again derivative with respect of x.

Second derivative is 9sec(x) tan(x).

answered Aug 12, 2014 by david Expert

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