If f is a periodic function, then the locations of all absolute extrema on the interval − ∞ , + ∞ can be obtained by finding the locations of the absolute extrema for one period and using the periodicity to locate the rest. Use this idea in these exercises to find the absolute maximum and minimum values of the function, and state the x -values at which they occur. f x = 2 cos x + cos 2 x
If f is a periodic function, then the locations of all absolute extrema on the interval − ∞ , + ∞ can be obtained by finding the locations of the absolute extrema for one period and using the periodicity to locate the rest. Use this idea in these exercises to find the absolute maximum and minimum values of the function, and state the x -values at which they occur. f x = 2 cos x + cos 2 x
If
f
is a periodic function, then the locations of all absolute extrema on the interval
−
∞
,
+
∞
can be obtained by finding the locations of the absolute extrema for one period and using the periodicity to locate the rest. Use this idea in these exercises to find the absolute maximum and minimum values of the function, and state the x-values at which they occur.
Consider the function f(x) = cos(x2 – 2) + 1 on the interval (-3,3). Calculate the two x-intercepts of this function on the given interval. Express your answers in exact form, as a comma separated list. You may not use the zero/root functionality of a calculator
to do this; you must show all of your work and explain your reasoning, where necessary.
X =
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