I am presenting a problem in front of the class tomorrow and I am slightly confused on the steps for my problem. The problem is:(adsbygoogle = window.adsbygoogle || []).push({});

Find the derivative of the given function

f(w) = ln[cos(w-1)]

The answer in the back of my book shows the derivative is -tan(w-1) - but I'm my steps aren't giving that answer - could anyone show me the steps to use in order to get that answer? Thanks a lot!

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# Homework Help: Chain Rule Help

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