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Integrals of Basic Trig Functions

12. Trigonometric Functions / Integrals of Basic Trig Functions / 문제 2

문제 2

Find ∫ cos(3x) dx.

A

(1/3) sin(3x) + C

B

sin(3x) + C

C

3 sin(3x) + C

D

-(1/3) cos(3x) + C