Use a Graphing Calculator to Determine All Local Maxima And/or $y=2 x^{3}-7 x^{2}-4 x$

question 30

Essay

Use a graphing calculator to determine all local maxima and/or minima for the function $y=2 x^{3}-7 x^{2}-4 x$ Give the values where the extremum occur to two decimal places.

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