Using the substitution u=5xu = 5xu=5x, which expression is equivalent to ∫sin(5x)dx\int \sin(5x) dx∫sin(5x)dx?
∫sin(u)du\int \sin(u) du∫sin(u)du
15∫sin(u)du\frac{1}{5} \int \sin(u) du51∫sin(u)du
5∫sin(u)du5 \int \sin(u) du5∫sin(u)du
−15cos(u)+C-\frac{1}{5} \cos(u) + C−51cos(u)+C