$\text { Find the relative maxima of } f ( x ) = \cos ^ { 2 } ( 4 x ) \text { on the interval } ( 0,3.142 ) \text { by applying }$

question 115

Multiple Choice

$\text { Find the relative maxima of } f ( x ) = \cos ^ { 2 } ( 4 x ) \text { on the interval } ( 0,3.142 ) \text { by applying }$
the First Derivative Test. Round numerical values in your answer to three decimal places.

• A) relative maxima: \(( 1.571,1 ) , ( 1.963,1 ) , ( 2.356,13.142 )\)
• B) relative maxima: \(( 0.393,0 ) ( 1.178,0 ) , ( 1.963,0 ) , ( 2.749,0 )\)
• C) relative maxima: \(( 0.785,1 ) , ( 1.571,1 ) , ( 2.356,1 )\)
• D) relative maxima: \(( 0.393,1 ) , ( 1.178,1 ) , ( 1.963,1 ) , ( 2.749,1 )\)
• E) relative maxima: \(( 0.393,1 ) , ( 0.785,1 ) , ( 1.178,1 )\)

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