Use a Graphing Device to Find the Maximum and Minimum $y = \cos x - \frac { 1 } { 2 } \cos 2 x$

question 107

Multiple Choice

Use a graphing device to find the maximum and minimum values of the function $y = \cos x - \frac { 1 } { 2 } \cos 2 x$

• A)maximum value: \(\frac { 4 } { 3 }\)
• , minimum value: \(0\)
• B)maximum value: \(\frac { 3 } { 4 }\)
• , minimum value: \(- 1\)
• C)maximum value: \(\frac { 3 } { 4 }\)
• , minimum value: \(- \frac { 3 } { 2 }\)
• D)maximum value: \(\frac { 3 } { 4 }\)
• , minimum value: \(- \frac { 4 } { 3 }\)
• E) none of these

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