Find ∫ln(x2+1)dx\int \ln(x^2+1) dx∫ln(x2+1)dx.
xln(x2+1)−2x+2arctan(x)+Cx \ln(x^2+1) - 2x + 2 \arctan(x) + Cxln(x2+1)−2x+2arctan(x)+C
xln(x2+1)−x+Cx \ln(x^2+1) - x + Cxln(x2+1)−x+C
xln(x2+1)+arctan(x)+Cx \ln(x^2+1) + \arctan(x) + Cxln(x2+1)+arctan(x)+C
x22ln(x2+1)+C\frac{x^2}{2} \ln(x^2+1) + C2x2ln(x2+1)+C