72.3.2 problem 1 (b)

Internal problem ID [19391]
Book : DIFFERENTIAL EQUATIONS WITH APPLICATIONS AND HISTORICAL NOTES by George F. Simmons. 3rd edition. 2017. CRC press, Boca Raton FL.
Section : Chapter 2. First order equations. Section 7 (Homogeneous Equations). Problems at page 67
Problem number : 1 (b)
Date solved : Thursday, October 02, 2025 at 04:21:34 PM
CAS classification : [[_homogeneous, `class A`], _rational, _Bernoulli]

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

✓ Maple. Time used: 0.002 (sec). Leaf size: 17

ode:=x^2*diff(y(x),x)-3*x*y(x)-2*y(x)^2 = 0; 
dsolve(ode,y(x), singsol=all);
 

\[ y = \frac {x^{3}}{-x^{2}+c_1} \]

✓ Mathematica. Time used: 0.089 (sec). Leaf size: 25

ode=x^2*D[y[x],x]-3*x*y[x]-2*y[x]^2==0; 
ic={}; 
DSolve[{ode,ic},y[x],x,IncludeSingularSolutions->True]
 

\begin{align*} y(x)&\to -\frac {x^3}{x^2-c_1}\\ y(x)&\to 0 \end{align*}

✓ Sympy. Time used: 0.118 (sec). Leaf size: 10

from sympy import * 
x = symbols("x") 
y = Function("y") 
ode = Eq(x**2*Derivative(y(x), x) - 3*x*y(x) - 2*y(x)**2,0) 
ics = {} 
dsolve(ode,func=y(x),ics=ics)
 

\[ y{\left (x \right )} = \frac {x^{3}}{C_{1} - x^{2}} \]