The question I'm currently working on now is to find the absolute maximum and absolute minimum values of f on the given interval.(adsbygoogle = window.adsbygoogle || []).push({});

f(x) = x-2cosx, [-pi, pi]

f'(x) = 1+2sinx = 0

From here I've found that -30 degrees(-pi/6) and -150(-5pi/6) degrees are the two intercepts in the equation. However I'm just having some trouble figuring out how to solve for this type of question. Any sort of hints would be great, thanks :P

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# Homework Help: Method of Closed Interval

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