[理工] [工數]-ODE 感覺有陷阱!!
solve the following first order differential equation
xy' = x+ y
題目說什麼優先順序 不太了解
xdy = xdx + ydx
xdy-ydx -xdx = 0
y 1
d(---) - --- dx = 0
x x
y/x - lnlxl = c
這樣寫可以嗎?
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