Find the intervals on which f is increasing and the intervals on which it is decreasing.

f(x) = 3cos3x on [-?, ?]

Please show all the work, I am really trying to understand what to do after you find the derivative and set it to 0.

Question

Find the intervals on which f is increasing and the intervals on which it is decreasing.

f(x) = 3cos3x on [-?, ?]

Please show all the work, I am really trying to understand what to do after you find the derivative and set it to 0.

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Expert Answer to - Find the intervals on which f is increasing and the intervals on which it is decreasing.  f(x) = 3co

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Solution for - Find the intervals on which f is increasing and the intervals on which it is decreasing.  f(x) = 3co

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