3.5 problem Ex 5

Internal problem ID [11145]

Book: An elementary treatise on differential equations by Abraham Cohen. DC heath publishers. 1906
Section: Chapter 2, differential equations of the first order and the first degree. Article 10. Homogeneous equations. Page 15
Problem number: Ex 5.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_separable]

\[ \boxed {y^{3}+x^{3} y^{\prime }=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 30

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

\begin{align*} y \left (x \right ) = \frac {x}{\sqrt {x^{2} c_{1} -1}} y \left (x \right ) = -\frac {x}{\sqrt {x^{2} c_{1} -1}} \end{align*}

Solution by Mathematica

Time used: 0.356 (sec). Leaf size: 45

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

\begin{align*} y(x)\to -\frac {x}{\sqrt {-1-2 c_1 x^2}} y(x)\to \frac {x}{\sqrt {-1-2 c_1 x^2}} y(x)\to 0 \end{align*}