dy/dx=1/(x–y^2)的通解

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dy/dx=1/(x–y^2)的通解

dy/dx=1/(x–y^2)的通解
dy/dx=1/(x–y^2)的通解

dy/dx=1/(x–y^2)的通解
∵dy/dx=1/(x–y^2)
==>dx-xdy+y^2dy=0
==>e^(-y)dx-xe^(-y)dy+y^2e^(-y)dy=0 (等式两端同乘e^(-y))
==>d(xe^(-y))-d((y^2+2y+2)e^(-y))=0
==>xe^(-y)-(y^2+2y+2)e^(-y)=C (C是常数)
==>x=y^2+2y+2+Ce^y
∴原方程的通解是x=y^2+2y+2+Ce^y.