Posted by haifeng on 2024-05-22 08:22:38 last update 2024-05-22 08:22:38 | Answers (0) | 收藏
设 $\frac{x_1}{e^{x_1}}=\frac{x_2}{e^{x_2}}$, 证明 $x_1+x_2 > 2$.
