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摘要: 微分方程习题课 小技巧:\(h+\sqrt{h^2-1}=g \Rightarrow (g-h)^2=\sqrt{h^2-1} \Rightarrow g^2-2gh+{\color{red}{h^2}}={\color{red}{h^2}}-1\) \[ \begin{aligned} &p=y' 阅读全文
posted @ 2021-12-20 20:34 nekko 阅读(98) 评论(0) 推荐(0)