Sir, I had posted the following question on 16th March, 2013: Evaluate: ??x.log(x+1) ?dx Sir, you have solved this question and your answer is as follows: log(x+1).x^2/2-(x+1)^2/4+x-1/2 log|x+1|+C But the answer given in the book is: 1/2 (x^2-1)log(x+1)-1/4 x^2+1/2 x+C So, please be kind enough to convert your answer into the answer given in the book,if possible.