12.2.29 problem 29

Internal problem ID [1565]
Book : Elementary differential equations with boundary value problems. William F. Trench. Brooks/Cole 2001
Section : Chapter 2, First order equations. Linear first order. Section 2.1 Page 41
Problem number : 29
Date solved : Saturday, March 29, 2025 at 10:59:22 PM
CAS classification : [_linear]

\begin{align*} y^{\prime }+\frac {y}{x}&=\frac {2}{x^{2}}+1 \end{align*}

With initial conditions

\begin{align*} y \left (-1\right )&=0 \end{align*}

✓ Maple. Time used: 0.032 (sec). Leaf size: 21

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

\[ y = \frac {-4 i \pi +x^{2}+4 \ln \left (x \right )-1}{2 x} \]

✓ Mathematica. Time used: 0.03 (sec). Leaf size: 26

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

\[ y(x)\to \frac {x^2+4 \log (x)-4 i \pi -1}{2 x} \]

✓ Sympy. Time used: 0.204 (sec). Leaf size: 22

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

\[ y{\left (x \right )} = \frac {\frac {x^{2}}{2} + 2 \log {\left (x \right )} - \frac {1}{2} - 2 i \pi }{x} \]