Internal problem ID [8496]
Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, Additional non-linear first order
Problem number: 916.
ODE order: 1.
ODE degree: 1.
CAS Maple gives this as type [NONE]
Solve \begin {gather*} \boxed {y^{\prime }-\frac {y \left (\ln \relax (y) x +\ln \relax (y)-x -1+x \ln \relax (x )+\ln \relax (x )+x^{4} \ln \relax (x )^{2}+2 x^{4} \ln \relax (y) \ln \relax (x )+x^{4} \ln \relax (y)^{2}\right )}{x \left (x +1\right )}=0} \end {gather*}
✓ Solution by Maple
Time used: 0.01 (sec). Leaf size: 80
dsolve(diff(y(x),x) = y(x)*(ln(y(x))*x+ln(y(x))-x-1+x*ln(x)+ln(x)+x^4*ln(x)^2+2*x^4*ln(y(x))*ln(x)+x^4*ln(y(x))^2)/x/(x+1),y(x), singsol=all)
\[ y \relax (x ) = {\mathrm e}^{-\frac {3 \ln \relax (x ) x^{4}-4 x^{3} \ln \relax (x )+6 \ln \relax (x ) x^{2}+12 \ln \relax (x ) \ln \left (x +1\right )-12 c_{1} \ln \relax (x )-12 \ln \relax (x ) x +12 x}{3 x^{4}-4 x^{3}+6 x^{2}+12 \ln \left (x +1\right )-12 c_{1}-12 x}} \]
✓ Solution by Mathematica
Time used: 0.607 (sec). Leaf size: 47
DSolve[y'[x] == ((-1 - x + Log[x] + x*Log[x] + x^4*Log[x]^2 + Log[y[x]] + x*Log[y[x]] + 2*x^4*Log[x]*Log[y[x]] + x^4*Log[y[x]]^2)*y[x])/(x*(1 + x)),y[x],x,IncludeSingularSolutions -> True]
\begin{align*} y(x)\to \frac {\exp \left (\frac {12 x}{x (x ((4-3 x) x-6)+12)-12 \log (x+1)+c_1}\right )}{x} \\ y(x)\to \frac {1}{x} \\ \end{align*}