Posted by haifeng on 2024-06-01 21:21:24 last update 2024-06-01 21:21:24 | Answers (2) | 收藏
求下列方程的积分因子, 并求其通解.
1. $y\mathrm{d}x-x\mathrm{d}y+xy^2\mathrm{d}x=0$.
2. $(1+xy)y\mathrm{d}x+(1-xy)x\mathrm{d}y=0$.
