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Use the first derivative test to find the relative maxima and minima of the function f...

Use the first derivative test to find the relative maxima and minima of the function f (x) = 3x^4 + 8x^3 – 90x^2 + 1,200 on the domain (–∞, 7]. Determine the intervals of increase and decrease on this domain. Complete the answer box, if there are no answers, write “NONE.” SHOW WORK.

Crit Points:

Intervals of increase:

Intervals of decrease:

Coords of relative max

Coords of relative min

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