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###### Math · Calculus
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Calc 4.3.2

Find the local maximum and minimum values of f using both the First and Second Derivative Tests. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = 4x5 − 20x + 2

Local max values:

Local Min Values:

4.1-1

The length of a rectangle is increasing at a rate of 5 cm/s and its width is increasing at a rate of 7 cm/s. When the length is 13 cm and the width is 5 cm, how fast is the area of the rectangle increasing?Assume that x and y are functions of t. If y = x3 + 4x and dx/dt = 4, find dy/dt when x = 2

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