What is the antiderivative of x/(x^2+1)? Calculus Techniques of Integration Integration by Parts 1 Answer Gió Feb 26, 2016 I found: 1/2ln(x^2+1)+c Explanation: I tried by substitution: Answer link Related questions How do I find the integral int(x*ln(x))dx ? How do I find the integral int(cos(x)/e^x)dx ? How do I find the integral int(x*cos(5x))dx ? How do I find the integral int(x*e^-x)dx ? How do I find the integral int(x^2*sin(pix))dx ? How do I find the integral intln(2x+1)dx ? How do I find the integral intsin^-1(x)dx ? How do I find the integral intarctan(4x)dx ? How do I find the integral intx^5*ln(x)dx ? How do I find the integral intx*2^xdx ? See all questions in Integration by Parts Impact of this question 2110 views around the world You can reuse this answer Creative Commons License