Question: f ( x ) = 8 3 x 3 - 2 8 x 2 - 6 4 x - 4 increasing decreasing

f(x)=83x3-28x2-64x-4
increasing
decreasing
f ( x ) = 8 3 x 3 - 2 8 x 2 - 6 4 x - 4

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