Re: [理工] [工數][ode]

[xxxorc (hghg)]

我這樣解是不是怪怪的阿??

xy'-4x^2y+2ylny=0

xdy-4x^2ydx+2ylnydx=0

x/ydy-4x^2dx+2lnydx=0

x dlny
- ----  +  2lnydx -4x^2dx = 0
y   1
   ---
    y


d(lny*x^2)
----------- - 4x^2dx=0
     x

x^2lny-x^4=c

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