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Find the relative maxima and minima of f(x)=x^4-8x^3+22x^2-24x+20.

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Solution. Since f'(x)=4x^3-24x^2+44x-24=4(x-1)(x-2)(x-3), let f'(x)=0, we get
x=1, ...

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Relative maxima and minima are found. The response received a rating of "5" from the student who originally posted the question.

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