Internal problem ID [8615]
Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, linear first order
Problem number: 279.
ODE order: 1.
ODE degree: 1.
CAS Maple gives this as type [_rational]
\[ \boxed {\left (x +2 y+y^{2}\right ) y^{\prime }+y \left (1+y\right )+\left (x +y\right )^{2} y^{2}=0} \]
✓ Solution by Maple
Time used: 0.0 (sec). Leaf size: 114
dsolve((y(x)^2+2*y(x)+x)*diff(y(x),x)+(y(x)+x)^2*y(x)^2+y(x)*(y(x)+1)=0,y(x), singsol=all)
\begin{align*} y \left (x \right ) = \frac {-x c_{1} +x^{2}-1+\sqrt {c_{1}^{2} x^{2}-2 c_{1} x^{3}+x^{4}+2 x c_{1} -2 x^{2}-4 c_{1} +4 x +1}}{-2 x +2 c_{1}} y \left (x \right ) = -\frac {x c_{1} -x^{2}+\sqrt {c_{1}^{2} x^{2}-2 c_{1} x^{3}+x^{4}+2 x c_{1} -2 x^{2}-4 c_{1} +4 x +1}+1}{2 \left (-x +c_{1} \right )} \end{align*}
✓ Solution by Mathematica
Time used: 2.179 (sec). Leaf size: 146
DSolve[(y[x]^2+2*y[x]+x)*y'[x]+(y[x]+x)^2*y[x]^2+y[x]*(y[x]+1)==0,y[x],x,IncludeSingularSolutions -> True]
\begin{align*} y(x)\to -\frac {x^2+\sqrt {\left (-x^2+c_1 x+1\right ){}^2+4 (x-c_1)}-c_1 x-1}{2 (x-c_1)} y(x)\to \frac {-x^2+\sqrt {\left (-x^2+c_1 x+1\right ){}^2+4 (x-c_1)}+c_1 x+1}{2 (x-c_1)} y(x)\to \frac {1}{2} \left (-\sqrt {x^2}-x\right ) y(x)\to \frac {1}{2} \left (\sqrt {x^2}-x\right ) \end{align*}