※ 引述《semmy214 (黃小六)》之銘言:
: (x^2-x)y"+(x-2)y'=0
: 求解
(ln(y'))' = -(x-2)/[x(x - 1)]
= 1/(x-1) - 2/x
ln(y') = ln[(x-1)/(x^2)] + a
=> y' = C[1/x - (1/x)^2]
=> y = Clnx + C(1/x) + D
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