Question: For the following function, find the intervals on which the function is increasing or decreasing. [ f(x)=4 x^{3}-3 x^{2}-36 x+4] List any interval(s) on which
For the following function, find the intervals on which the function is increasing or decreasing. \[ f(x)=4 x^{3}-3 x^{2}-36 x+4\] List any interval(s) on which the function is increasing. Select the correct choice and, if necessary, fill in the answer box to complete your choice. A. The function is increasing on the interval(s).(Type your answer in interval notation. Simplify your answer. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.) B. The function is never increasing.
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