求微分方程的通解?(x^2+1)dydx+2xy=4
编辑: admin 2017-01-03
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4
(x²+1)dy + 2xydx = 4x²dx
(x²+1)dy + ydx² = 4x²dx
dy + dyx² = d(4x³/3)
积分得
y + yx² = 4x³/3 + C
或y = (4x³ + C)/(3x²+3)
这是通解