Do you mean 'show that' \(\displaystyle \int \frac{x+1}{x^2+2x}~dx = \ln(x^2+2x) \) or 'find' \(\displaystyle \int \frac{x+1}{x^2+2x} \ln(x^2+2x)~dx \)
Do you mean 'show that' \(\displaystyle \int \frac{x+1}{x^2+2x}~dx = \ln(x^2+2x) \) or 'find' \(\displaystyle \int \frac{x+1}{x^2+2x} \ln(x^2+2x)~dx \)