Find all relative and absolute extrema in the function f(x) = cos((2pi/3)(x)) on the interval [0,2].

I know how to solve for the extremes, but I'm having a problem finding the first and second derivatives of the function. Any help?

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- Feb 1st 2010, 11:28 PMiyppxstahhRelative and Absolute Extrema
Find all relative and absolute extrema in the function f(x) = cos((2pi/3)(x)) on the interval [0,2].

I know how to solve for the extremes, but I'm having a problem finding the first and second derivatives of the function. Any help? - Feb 1st 2010, 11:47 PMCalculus26
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