Internal problem ID [9953]
Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 6, non-linear second order
Problem number: 1621 (6.31).
ODE order: 2.
ODE degree: 1.
CAS Maple gives this as type [[_2nd_order, _missing_x]]
\[ \boxed {y^{\prime \prime }+y y^{\prime }-y^{3}+y a=0} \]
✓ Solution by Maple
Time used: 0.078 (sec). Leaf size: 108
dsolve(diff(diff(y(x),x),x)+y(x)*diff(y(x),x)-y(x)^3+a*y(x)=0,y(x), singsol=all)
\[ \int _{}^{y \left (x \right )}\frac {4 {\operatorname {RootOf}\left (\left (4 \textit {\_a}^{6}-12 a \,\textit {\_a}^{4}+12 \textit {\_a}^{2} a^{2}-4 a^{3}-320 c_{1} \right ) \textit {\_Z}^{9}+\left (189 \textit {\_a}^{6}-567 a \,\textit {\_a}^{4}+567 \textit {\_a}^{2} a^{2}-189 a^{3}-15120 c_{1} \right ) \textit {\_Z}^{6}-238140 c_{1} \textit {\_Z}^{3}-1250235 c_{1} \right )}^{3}+63}{-63 \textit {\_a}^{2}+63 a}d \textit {\_a} -x -c_{2} = 0 \]
✓ Solution by Mathematica
Time used: 77.065 (sec). Leaf size: 3100
DSolve[a*y[x] - y[x]^3 + y[x]*y'[x] + y''[x] == 0,y[x],x,IncludeSingularSolutions -> True]
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