Question: Please write down the answers, don't just attach the results. thank you! PREVIOUS ANSWERS LARCALC9 3.3.021. Consider the following function. f(x) = 4x3 + 6.12

Please write down the answers, don't just attach the results. thank you!

Please write down the answers, don't just attach the results. thank you!

PREVIOUS ANSWERS LARCALC9 3.3.021. Consider the following function. f(x) = 4x3 + 6.12 - 24.x (a) Find the critical numbers of f. (Enter your answers as a comma-separated list.) X = X (b) Find the open intervals on which the function is increasing or decreasing. (Select all that apply.) Increasing: V (-00, -2) D (- 2, 1) (1, 00 ) O (-00, 00 ) Decreasing: O (-00, - 2) (-2, 1) O (1, 00) 1 ( -00, 00 ) (c) Apply the First Derivative Test to identify the relative extremum. (If an answer does not exist, enter DNE.) relative maximum (x, y) = ( X relative minimum (x, y) = ( x ) (d) Use a graphing utility to confirm your results. Submit

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