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Mathematics 15 Online
OpenStudy (anonymous):

Can anyone help me? Find the derivative of : y=ln(secx+tanx)

zepdrix (zepdrix):

Oh this is a fun one ^^

zepdrix (zepdrix):

You'll end up with an ugly mess of an answer, but you can apply a little trick to it to simplify it down really nicely :3 Eventually you'll just remember this identity since it's fairly common.

zepdrix (zepdrix):

|dw:1351988814891:dw| Understand the first step ok? :D Know where to take it from here?

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