7.19 problem 20

Internal problem ID [1079]

Book: Elementary differential equations with boundary value problems. William F. Trench. Brooks/Cole 2001
Section: Chapter 2, First order equations. Exact equations. Integrating factors. Section 2.6 Page 91
Problem number: 20.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_separable]

Solve \begin {gather*} \boxed {2 y+3 \left (x^{2}+y^{3} x^{2}\right ) y^{\prime }=0} \end {gather*}

Solution by Maple

Time used: 0.015 (sec). Leaf size: 29

dsolve((2*y(x))+3*(x^2+x^2*y(x)^3)*diff(y(x),x)=0,y(x), singsol=all)
 

\[ y \relax (x ) = {\mathrm e}^{-\frac {x \LambertW \left ({\mathrm e}^{-2 c_{1}+\frac {2}{x}}\right )+2 x c_{1}-2}{3 x}} \]

Solution by Mathematica

Time used: 60.102 (sec). Leaf size: 77

DSolve[(2*y[x])+3*(x^2+x^2*y[x]^3)*y'[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to \sqrt [3]{\text {ProductLog}\left (e^{\frac {2}{x}+3 c_1}\right )} \\ y(x)\to -\sqrt [3]{-1} \sqrt [3]{\text {ProductLog}\left (e^{\frac {2}{x}+3 c_1}\right )} \\ y(x)\to (-1)^{2/3} \sqrt [3]{\text {ProductLog}\left (e^{\frac {2}{x}+3 c_1}\right )} \\ \end{align*}