29.6.5 problem 151

Internal problem ID [4751]
Book : Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section : Various 6
Problem number : 151
Date solved : Sunday, March 30, 2025 at 03:52:45 AM
CAS classification : [_linear]

\begin{align*} x y^{\prime }&=\sin \left (x \right )-2 y \end{align*}

✓ Maple. Time used: 0.001 (sec). Leaf size: 17

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

\[ y = \frac {\sin \left (x \right )-\cos \left (x \right ) x +c_1}{x^{2}} \]

✓ Mathematica. Time used: 0.033 (sec). Leaf size: 19

ode=x D[y[x],x]==Sin[x]-2 y[x]; 
ic={}; 
DSolve[{ode,ic},y[x],x,IncludeSingularSolutions->True]
 

\[ y(x)\to \frac {\sin (x)-x \cos (x)+c_1}{x^2} \]

✓ Sympy. Time used: 0.297 (sec). Leaf size: 15

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

\[ y{\left (x \right )} = \frac {\frac {C_{1}}{x} - \cos {\left (x \right )} + \frac {\sin {\left (x \right )}}{x}}{x} \]