Find the Maximum and Minimum Values of the Function $y = \cos x - \frac { 1 } { 2 } \cos 2 x$

question 36

Essay

Find the maximum and minimum values of the function $y = \cos x - \frac { 1 } { 2 } \cos 2 x$ .

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Definitions:

American Military Involvement

Participation by the United States armed forces in conflicts, humanitarian missions, or peacekeeping activities around the world.

Korean War

A conflict fought from 1950 to 1953 between South Korea, supported by the United Nations and the United States, and North Korea, backed by the People's Republic of China, with military aid from the Soviet Union.

38th Parallel

The prearranged dividing line between North and South Korea established at the end of World War II.

Plausible Deniability

The ability of a person to deny knowledge of or responsibility for any damnable actions committed by others because of a lack of evidence that can confirm their participation.