Find ∫cos3xdx\int \cos^3 x dx∫cos3xdx.
sinx−sin3x3+C\sin x - \frac{\sin^3 x}{3} + Csinx−3sin3x+C
cos4x4+C\frac{\cos^4 x}{4} + C4cos4x+C
sinx+sin3x3+C\sin x + \frac{\sin^3 x}{3} + Csinx+3sin3x+C
None