Internal problem ID [8433]
Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, Additional non-linear first order
Problem number: 855.
ODE order: 1.
ODE degree: 1.
CAS Maple gives this as type [NONE]
\[ \boxed {y^{\prime }-\frac {y \left (\ln \left (y\right )-1+\ln \left (x \right )+\ln \left (x \right )^{2} x^{3}+2 x^{3} \ln \left (y\right ) \ln \left (x \right )+x^{3} \ln \left (y\right )^{2}\right )}{x}=0} \]
✓ Solution by Maple
Time used: 0.016 (sec). Leaf size: 51
dsolve(diff(y(x),x) = y(x)*(ln(y(x))-1+ln(x)+x^3*ln(x)^2+2*x^3*ln(y(x))*ln(x)+x^3*ln(y(x))^2)/x,y(x), singsol=all)
\[ y \left (x \right ) = x^{-\frac {x^{4}}{x^{4}+4 c_{1}}} x^{-\frac {4 c_{1}}{x^{4}+4 c_{1}}} {\mathrm e}^{-\frac {4 x}{x^{4}+4 c_{1}}} \]
✓ Solution by Mathematica
Time used: 0.354 (sec). Leaf size: 31
DSolve[y'[x] == ((-1 + Log[x] + x^3*Log[x]^2 + Log[y[x]] + 2*x^3*Log[x]*Log[y[x]] + x^3*Log[y[x]]^2)*y[x])/x,y[x],x,IncludeSingularSolutions -> True]
\begin{align*} y(x)\to \frac {e^{-\frac {4 x}{x^4+4 c_1}}}{x} \\ y(x)\to \frac {1}{x} \\ \end{align*}