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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