48.4.4 problem Problem 3.4

Internal problem ID [7546]
Book : THEORY OF DIFFERENTIAL EQUATIONS IN ENGINEERING AND MECHANICS. K.T. CHAU, CRC Press. Boca Raton, FL. 2018
Section : Chapter 3. Ordinary Differential Equations. Section 3.6 Summary and Problems. Page 218
Problem number : Problem 3.4
Date solved : Sunday, March 30, 2025 at 12:14:15 PM
CAS classification : [[_2nd_order, _with_linear_symmetries]]

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

✓ Maple. Time used: 0.003 (sec). Leaf size: 29

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

\[ y = \frac {\left (x^{3}+3 x^{2}+3 x \right ) c_2 +c_1}{\left (1+x \right ) x} \]

✓ Mathematica. Time used: 0.035 (sec). Leaf size: 34

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

\[ y(x)\to \frac {c_2 x \left (x^2+3 x+3\right )+3 c_1}{3 x (x+1)} \]

✗ Sympy

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

False