Use the first derivative test to find the relative maxima and minima of the function f(x) = 3x* + 8x³ – 90x² + 1,200 on the domain (-0, 7]. Determine the intervals of increase and decrease on this domain. Complete the answer box, if there are no answers, write "none." SHOW WORK. Coordinates of the critical points Intervals of increase Intervals of decrease I. Coordinates of the relative maxima Coordinates of the relative minima

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