20181113 Posted on 2018-11-13 Edited on 2021-05-09 In thoughts 我终于装好了MathJax!!!!!!!!!! 曲率 $ K=\frac {|y’’|} {(1+y’^2)^{\frac {3}{2}}} $s Related Posts 20181114 20181120 20190118 20190730 20190722 Have fun. Donate WeChat Pay Alipay Post author: BeiYu Post link: https://blog.bj-yan.top/thoughts-20181113/ Copyright Notice: All articles in this blog are licensed under BY-NC-SA unless stating additionally.