Using the substitution u=2xu = 2xu=2x, what is the result of the integral ∫cos(2x)dx\int \cos(2x) dx∫cos(2x)dx?
sin(2x)+C\sin(2x) + Csin(2x)+C
−12sin(2x)+C-\frac{1}{2} \sin(2x) + C−21sin(2x)+C
2sin(2x)+C2 \sin(2x) + C2sin(2x)+C
12sin(2x)+C\frac{1}{2} \sin(2x) + C21sin(2x)+C