[理工] [工數] 1階 ODE~~~~~~~~~~~~~~跪求!
y^2 dx - 6xydx + 3xydy -6x^2 dy = 0
y(1)= -2
xy^3 - 3(xy)^2 = c
不太會整理... c = -20嗎?
y^2+20
整理都怪怪的 y = ----------
3x
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