Find the exact location of all the relative and absolute extrema of the function. (Order your answers from smallest to largest x.) f(x) = 81x4 − 54x3 with domain [−1, +∞)

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A: NOTE: Refresh your page if you can't see any equations..

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A: The given function is

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A: 0.001" data-mce-style="box-sizing: border-box; display: inline-block; line-height: 0; text-indent:…

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A: The solution is shown in step-2