40.14.2 problem 23

Internal problem ID [6773]
Book : Schaums Outline. Theory and problems of Differential Equations, 1st edition. Frank Ayres. McGraw Hill 1952
Section : Chapter 19. Linear equations with variable coefficients (Misc. types). Supplemetary problems. Page 132
Problem number : 23
Date solved : Wednesday, March 05, 2025 at 02:45:31 AM
CAS classification : [[_2nd_order, _missing_y]]

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

✓ Maple. Time used: 0.001 (sec). Leaf size: 15

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

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

✓ Mathematica. Time used: 0.05 (sec). Leaf size: 18

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

\[ y(x)\to (1+c_1) \arctan (x)+\frac {1}{x}+c_2 \]

✓ Sympy. Time used: 0.708 (sec). Leaf size: 20

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

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