Posted by haifeng on 2022-01-01 22:21:34 last update 2022-01-01 22:22:04 | Answers (0) | 收藏
\[ \int\frac{\ln(1-x)}{x}\mathrm{d}x,\qquad\int\frac{\ln(1+x)}{x}\mathrm{d}x \]
\[ \int\frac{xe^x}{e^x-1}\mathrm{d}x,\qquad\int\frac{xe^x}{e^x+1}\mathrm{d}x \]
