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Mathematics 16 Online
OpenStudy (anonymous):

nth derivative of cos5x.cos3x

OpenStudy (anonymous):

Hi, and welcome! Have you heard of the Leibniz Rule? (It's ok if you haven't!)

OpenStudy (anonymous):

Hi...no i have not heard about it yet..can u explain me the answer apart from that theorem

OpenStudy (anonymous):

Okay, we don't need to use that rule if you haven't heard of it. First of all then, can you think of a way to simplify "cos5x.cos3x"?

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