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Let f(x)=tan1(cosx)f ( x ) = \tan ^ { - 1 } ( \cos x )

Question 44

Multiple Choice

Let f(x) =tan1(cosx) f ( x ) = \tan ^ { - 1 } ( \cos x ) Then f(x) f ^ { \prime } ( x ) is


A) sinx1+cos2x\frac { \sin x } { 1 + \cos ^ { 2 } x }
B) sinx1+cos2x- \frac { \sin x } { 1 + \cos ^ { 2 } x }
C) sinxcos2x1\frac { \sin x } { \cos ^ { 2 } x - 1 }
D) sinxcos2x1\frac { \sin x } { \cos ^ { 2 } x - 1 } .
E) sinxcos2x1- \frac { \sin x } { \cos ^ { 2 } x - 1 }

Correct Answer:

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