1.53 problem 53

Internal problem ID [7369]

Book: First order enumerated odes
Section: section 1
Problem number: 53.
ODE order: 1.
ODE degree: 2.

CAS Maple gives this as type [[_homogeneous, `class G`]]

\[ \boxed {{y^{\prime }}^{2}-\frac {y^{3}}{x}=0} \]

Solution by Maple

Time used: 0.015 (sec). Leaf size: 27

dsolve(diff(y(x),x)^2=y(x)^3/x,y(x), singsol=all)
 

\begin{align*} y \left (x \right ) &= 0 \\ y \left (x \right ) &= \frac {\operatorname {WeierstrassP}\left (1, 0, 0\right ) 2^{\frac {2}{3}}}{\left (\sqrt {x}\, 2^{\frac {1}{3}}+c_{1} \right )^{2}} \\ \end{align*}

Solution by Mathematica

Time used: 0.073 (sec). Leaf size: 42

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

\begin{align*} y(x)\to \frac {4}{\left (-2 \sqrt {x}+c_1\right ){}^2} \\ y(x)\to \frac {4}{\left (2 \sqrt {x}+c_1\right ){}^2} \\ y(x)\to 0 \\ \end{align*}