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Single Variable Calculus

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Moderate

Find Absolute Extreme Values of a Trig Function

SVCALC-FWJMT9

Find the absolute maximum and minimum values of:

$$f(x)=\cos x + \frac{1}{2}\cos 2x$$

...on the interval $[0,2\pi]$.

A

$1.5, -.75$

B

$0,2\pi$

C

$-1, 1$

D

$1.5, -1.5$