2.174 problem 750

Internal problem ID [8328]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, Additional non-linear first order
Problem number: 750.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_rational, [_1st_order, `_with_symmetry_[F(x),G(x)*y+H(x)]`]]

\[ \boxed {y^{\prime }-\frac {\left (x^{2}+3 y^{2}\right ) y}{\left (6 y^{2}+x \right ) x}=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 49

dsolve(diff(y(x),x) = 1/(6*y(x)^2+x)*(x^2+3*y(x)^2)*y(x)/x,y(x), singsol=all)
 

\[ \frac {1}{\frac {1}{y \left (x \right )^{2}}+\frac {6}{x}} = \frac {\left ({\mathrm e}^{\operatorname {RootOf}\left (-{\mathrm e}^{\textit {\_Z}} \ln \left (\frac {\left ({\mathrm e}^{\textit {\_Z}}+9\right ) x}{2}\right )+3 c_{1} {\mathrm e}^{\textit {\_Z}}+\textit {\_Z} \,{\mathrm e}^{\textit {\_Z}}+2 x \,{\mathrm e}^{\textit {\_Z}}+9\right )}+9\right ) x}{54} \]

Solution by Mathematica

Time used: 6.037 (sec). Leaf size: 73

DSolve[y'[x] == (y[x]*(x^2 + 3*y[x]^2))/(x*(x + 6*y[x]^2)),y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to -\frac {\sqrt {x} \sqrt {W\left (\frac {6 e^{2 (x+c_1)}}{x}\right )}}{\sqrt {6}} \\ y(x)\to \frac {\sqrt {x} \sqrt {W\left (\frac {6 e^{2 (x+c_1)}}{x}\right )}}{\sqrt {6}} \\ y(x)\to 0 \\ \end{align*}