【Maths 505】引人入胜的二阶非线性微分方程

[视频作者] 数学真是太帅了

[视频时长] 7:9

[视频类型] 科学科普

https://www.youtube.com/watch?v=TctJEYYeAs8 原标题：A fascinating second order non-linear differential equation I've always found non-linear DEs to be more fun than the standard DEs taught in university courses. So here's one with an elegant solution.