Find the derivative of f(x)=sin(x)cos(x)f(x) = \sin(x) \cos(x)f(x)=sin(x)cos(x).
cos(2x)\cos(2x)cos(2x)
sin(2x)\sin(2x)sin(2x)
−cos(2x)-\cos(2x)−cos(2x)
2cos(2x)2\cos(2x)2cos(2x)