![](https://i.imgur.com/ANVo2PM.jpg)
Re: [理工] 微分方程一題
![](https://i.imgur.com/ANVo2PM.jpg)
:
( y dx - 2x dy ) + x^2 y dy = 0
y^3 d ( x y^(-2) ) + x^2 y dy = 0
y^4 / x^2 d ( x y^(-2) ) + y^2 dy = 0
- y^2 / x + y^3 / 3 = C
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推
04/22 00:30,
5年前
, 1F
04/22 00:30, 1F
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