60.1.436 problem 438

Internal problem ID [10450]
Book : Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section : Chapter 1, linear first order
Problem number : 438
Date solved : Monday, January 27, 2025 at 07:45:44 PM
CAS classification : [_separable]

\begin{align*} x^{2} {y^{\prime }}^{2}+3 x y y^{\prime }+2 y^{2}&=0 \end{align*}

Solution by Maple

Time used: 0.003 (sec). Leaf size: 17

dsolve(x^2*diff(y(x),x)^2+3*x*y(x)*diff(y(x),x)+2*y(x)^2 = 0,y(x), singsol=all)
 
\begin{align*} y &= \frac {c_{1}}{x} \\ y &= \frac {c_{1}}{x^{2}} \\ \end{align*}

Solution by Mathematica

Time used: 0.047 (sec). Leaf size: 26

DSolve[2*y[x]^2 + 3*x*y[x]*D[y[x],x] + x^2*D[y[x],x]^2==0,y[x],x,IncludeSingularSolutions -> True]
 
\begin{align*} y(x)\to \frac {c_1}{x^2} \\ y(x)\to \frac {c_1}{x} \\ y(x)\to 0 \\ \end{align*}