若微分方程y'=f(x)的通解为y=g(x,C),则微分方程y'=1/x [f(xy)-y]的通解为?

问题描述:

若微分方程y'=f(x)的通解为y=g(x,C),则微分方程y'=1/x [f(xy)-y]的通解为?

设z=xy
dz/dx=y+xy'
y'=(z'-y)/x=1/x*[f(z)-y]
z'-y=f(z)-y
z'=f(z)
得到z=g(x,C)
y=g(x,C)/x