Internal problem ID [3207]
Book: Ordinary differential equations and their solutions. By George Moseley Murphy.
1960
Section: Various 17
Problem number: 461.
ODE order: 1.
ODE degree: 1.
CAS Maple gives this as type [_rational, _Bernoulli]
Solve \begin {gather*} \boxed {2 y y^{\prime }-x y^{2}-x^{3}=0} \end {gather*}
✓ Solution by Maple
Time used: 0.015 (sec). Leaf size: 43
dsolve(2*y(x)*diff(y(x),x) = x*y(x)^2+x^3,y(x), singsol=all)
\begin{align*} y \relax (x ) = \sqrt {{\mathrm e}^{\frac {x^{2}}{2}} c_{1}-x^{2}-2} \\ y \relax (x ) = -\sqrt {{\mathrm e}^{\frac {x^{2}}{2}} c_{1}-x^{2}-2} \\ \end{align*}
✓ Solution by Mathematica
Time used: 7.199 (sec). Leaf size: 57
DSolve[2 y[x] y'[x]==x y[x]^2+x^3,y[x],x,IncludeSingularSolutions -> True]
\begin{align*} y(x)\to -\sqrt {-x^2+c_1 e^{\frac {x^2}{2}}-2} \\ y(x)\to \sqrt {-x^2+c_1 e^{\frac {x^2}{2}}-2} \\ \end{align*}