29.30.22 problem 882

Internal problem ID [5462]
Book : Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section : Various 30
Problem number : 882
Date solved : Sunday, March 30, 2025 at 08:14:18 AM
CAS classification : [[_1st_order, _with_linear_symmetries], _Clairaut]

\begin{align*} \left (1+3 x \right ) {y^{\prime }}^{2}-3 \left (2+y\right ) y^{\prime }+9&=0 \end{align*}

✓ Maple. Time used: 0.082 (sec). Leaf size: 51

ode:=(3*x+1)*diff(y(x),x)^2-3*(2+y(x))*diff(y(x),x)+9 = 0; 
dsolve(ode,y(x), singsol=all);
 

\begin{align*} y &= -2-2 \sqrt {1+3 x} \\ y &= -2+2 \sqrt {1+3 x} \\ y &= \frac {9+\left (1+3 x \right ) c_1^{2}-6 c_1}{3 c_1} \\ \end{align*}

✓ Mathematica. Time used: 0.015 (sec). Leaf size: 60

ode=(1+3 x) (D[y[x],x])^2-3(2+y[x])D[y[x],x]+9==0; 
ic={}; 
DSolve[{ode,ic},y[x],x,IncludeSingularSolutions->True]
 

\begin{align*} y(x)\to c_1 \left (x+\frac {1}{3}\right )-2+\frac {3}{c_1} \\ y(x)\to \text {Indeterminate} \\ y(x)\to -2 \left (\sqrt {3 x+1}+1\right ) \\ y(x)\to 2 \left (\sqrt {3 x+1}-1\right ) \\ \end{align*}

✗ Sympy

from sympy import * 
x = symbols("x") 
y = Function("y") 
ode = Eq((3*x + 1)*Derivative(y(x), x)**2 - (3*y(x) + 6)*Derivative(y(x), x) + 9,0) 
ics = {} 
dsolve(ode,func=y(x),ics=ics)
 

Timed Out