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If f(x)=cos2(2x), find f(π3)f ( x ) = \cos ^ { 2 } ( 2 x ) , \text { find } f ^ { \prime } \left( \frac { \pi } { 3 } \right)

Question 154

Multiple Choice

If f(x) =cos2(2x) , find f(π3) f ( x ) = \cos ^ { 2 } ( 2 x ) , \text { find } f ^ { \prime } \left( \frac { \pi } { 3 } \right)


A) 3\sqrt { 3 }
B) 34\frac { \sqrt { 3 } } { 4 }
C) 1
D) 1- 1
E) 3- \sqrt { 3 }
F) 32- \frac { \sqrt { 3 } } { 2 }
G) 32\frac { \sqrt { 3 } } { 2 }
H) 34- \frac { \sqrt { 3 } } { 4 }

Correct Answer:

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