--- C.-D. --- E. Find critical values, the intervals on which f(x) is increasing

Question

--- C.-D.

--- E.

Find critical values, the intervals on which f(x) is increasing, the intervals on which f(x) is decreasing, and the local extrema for the following function. Do not graph. F(x) = x4 (x = 21)2 Find the critical values of are x = . (Use a comma to separate answers as needed.) here are no critical values of f. On which interval is f increasing? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. The function f is increasing on the interval(s) . (Type your answer in interval notation. Use a comma to separate answers as needed.) There are no intervals on which the function is increasing.

Explanation / Answer

critical values; x=0,14,21

f(x) is increasing in (0,14) and (21,infinity)

f(x) is decreasing in (-infinity,0) and (14,21)

local maxima at; x=14

local minima at; x=21

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