Posted by haifeng on 2015-03-03 10:44:53 last update 2015-03-03 13:31:43 | Answers (0) | 收藏
\[ \int(1+x-\frac{1}{x})e^{x+\frac{1}{x}}dx \]
[Hint]
考虑 $de^{x+\frac{1}{x}}$, 然后可以迅速找到被积函数的原函数.
