Evaluate the Integral Using the Given Substitution $\int \frac { 7 } { x ^ { 2 } } \sin ^ { 2 } \left( \frac { 7 } { x } \right) d x , \quad u = - \frac { 7 } { x }$

question 269

Multiple Choice

Evaluate the integral using the given substitution.
- $\int \frac { 7 } { x ^ { 2 } } \sin ^ { 2 } \left( \frac { 7 } { x } \right) d x , \quad u = - \frac { 7 } { x }$

• A) \(- \frac { 7 } { x } + \sin ^ { 3 } \frac { 14 } { x } + C\)
• B) \(- \frac { 7 } { x } + \frac { 1 } { 2 } \sin \frac { 14 } { x } + C\)
• C) \(\frac { 7 } { 2 x } + \frac { 1 } { 2 } \sin \frac { 7 } { x } + C\)
• D) \(- \frac { 7 } { 2 x } + \frac { 1 } { 4 } \sin \frac { 14 } { x } + C\)

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