Internal problem ID [2053]
Book: Differential equations and linear algebra, Stephen W. Goode, second edition, 2000
Section: 1.6, page 50
Problem number: 4.
ODE order: 1.
ODE degree: 1.
CAS Maple gives this as type [_linear]
Solve \begin {gather*} \boxed {y^{\prime }+\frac {2 x y}{x^{2}+1}-4 x=0} \end {gather*}
✓ Solution by Maple
Time used: 0.003 (sec). Leaf size: 18
dsolve(diff(y(x),x)+2*x/(1+x^2)*y(x)=4*x,y(x), singsol=all)
\[ y \relax (x ) = x^{2}+1+\frac {c_{1}}{x^{2}+1} \]
✓ Solution by Mathematica
Time used: 0.035 (sec). Leaf size: 24
DSolve[y'[x]+2*x/(1+x^2)*y[x]==4*x,y[x],x,IncludeSingularSolutions -> True]
\begin{align*} y(x)\to \frac {x^4+2 x^2+c_1}{x^2+1} \\ \end{align*}