x/(x+1)

i let u=x+1

so x=u-1

i get answer of

x+1-ln x +c

book has answer of

x - ln x +c

what happened to the 1????

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- Jul 15th 2012, 08:39 AMsluggerbrothanti derivative?????????
x/(x+1)

i let u=x+1

so x=u-1

i get answer of

x+1-ln x +c

book has answer of

x - ln x +c

what happened to the 1???? - Jul 15th 2012, 08:45 AMProve ItRe: anti derivative?????????
- Jul 15th 2012, 08:08 PMrichard1234Re: anti derivative?????????
Hint: $\displaystyle \frac{x}{x+1} = 1 - \frac{1}{x+1}$.