Using uuu-substitution for ∫cos(x)sin(x)dx\int \cos(x) \sin(x) dx∫cos(x)sin(x)dx, if u=sin(x)u = \sin(x)u=sin(x), what does the integral become?
∫udu\int u du∫udu
∫u2du\int u^2 du∫u2du
∫cos2(x)du\int \cos^2(x) du∫cos2(x)du
∫sin(x)du\int \sin(x) du∫sin(x)du