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1, Let f(x)=x3/3−0.5x2−6x Find the interval where f(x) is decreasing. Enter your answer for the left...

1, Let

f(x)=x3/3−0.5x2−6x

Find the interval where f(x) is decreasing.

Enter your answer for the left endpoint in the first textbox, and right endpoint in the second textbox:

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