Question: For the function below, find a) the critical numbers; b) the open intervals where the function is increasing; and c) the open intervals where it


For the function below, find a) the critical numbers; b) the open intervals where the function is increasing; and c) the open intervals where it is decreasing. f (x ) = 12x3-81x2-1008x+ 1 . . . a) Find the critical number(s). Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The critical number(s) is/are (Type an integer or a simplified fraction. Use a comma to separate answers as needed.) O B. There are no critical numbers
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