Question

u substitution, anti derivative of
y/(y+1)^(3) dy

Answer 1

u=y+1
u-1=y
du=dy

Answer 2

\[\int\limits_{}^{}\frac{u-1}{u^3} du=\int\limits_{}^{}(u^{-2}-u^{-3}) du\]

Answer 3

nevermind i got it