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Use Reduction Formulas to Evaluate the Integral 3cos3xsin6xdx\int 3 \cos ^ { 3 } x \sin ^ { 6 } x d x

Question 240

Multiple Choice

Use reduction formulas to evaluate the integral.
- 3cos3xsin6xdx\int 3 \cos ^ { 3 } x \sin ^ { 6 } x d x


A) 37(sin7xsin9x) +C\frac { 3 } { 7 } \left( \sin ^ { 7 } x - \sin ^ { 9 } x \right) + C
B) 35cos5x37cos7x+C\frac { 3 } { 5 } \cos ^ { 5 } x - \frac { 3 } { 7 } \cos ^ { 7 } x + C
C) 37sin7x13sin9x+C\frac { 3 } { 7 } \sin ^ { 7 } x - \frac { 1 } { 3 } \sin ^ { 9 } x + C
D) 35sin5x13cos9x+C\frac { 3 } { 5 } \sin ^ { 5 } x - \frac { 1 } { 3 } \cos ^ { 9 } x + C

Correct Answer:

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