Integrate $\int \cos ^{2} 3 x \sin 3 x d x$

question 102

Multiple Choice

Integrate $\int \cos ^{2} 3 x \sin 3 x d x$ .

• A) \(\frac{\cos ^{3} 3 x}{9}+C\)
• B) \(-\frac{\cos ^{3} 3 x}{9}+C\)
• C) \(\frac{\cos ^{3} 3 x}{3}+C\)
• D) \(-\frac{\cos ^{3} 3 x}{27}+C\)

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