Evaluate the Integral $\int \cot ^ { 4 } 3 x d x$

question 314

Multiple Choice

Evaluate the integral.
- $\int \cot ^ { 4 } 3 x d x$

• A) \(- \frac { 1 } { 9 } \cot ^ { 3 } 3 x + \frac { 1 } { 3 } \cot 3 x + x + C\)
• B) \(- \frac { 1 } { 3 } \cot ^ { 3 } 3 x + \cot 3 x + x + C\)
• C) \(- \frac { 1 } { 9 } \cot ^ { 3 } 3 x + \frac { 1 } { 3 } \cot 3 x + C\)
• D) \(- \frac { 1 } { 9 } \cot ^ { 3 } 3 x + \frac { 1 } { 3 } \cot ^ { 2 } 3 x + x + C\)

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