Evaluate $\int \cos ( \ln x ) d x$ A) $\sin ( \ln x ) + C$

Evaluate $\int \cos ( \ln x ) d x$

A) $\sin ( \ln x ) + C$

B) $\frac { x ^ { 2 } } { 2 } [ \cos ( \ln x ) + \sin ( \ln x ) ] + C$
C) $\cos \left( \frac { 1 } { x } \right) + C$
D) $\frac { x } { 4 } [ \cos ( \ln x ) + \sin ( \ln x ) ] + C$
E) $\frac { \sin x } { x } + C$
F) $x [ \cos ( \ln x ) + \sin ( \ln x ) ] + C$

G) $- \sin \left( \frac { 1 } { x } \right) + C$

H) $\frac { x } { 2 } [ \cos ( \ln x ) + \sin ( \ln x ) ] + C$

Correct Answer:

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