3.161 problem 1165

Internal problem ID [9495]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 2, linear second order
Problem number: 1165.
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [[_2nd_order, _exact, _linear, _homogeneous]]

\[ \boxed {x^{2} y^{\prime \prime }+\left (x +a \right ) y^{\prime }-y=0} \]

Solution by Maple

Time used: 0.015 (sec). Leaf size: 19

dsolve(x^2*diff(diff(y(x),x),x)+(x+a)*diff(y(x),x)-y(x)=0,y(x), singsol=all)
 

\[ y \left (x \right ) = \left (a +x \right ) c_{1} +c_{2} x \,{\mathrm e}^{\frac {a}{x}} \]

Solution by Mathematica

Time used: 0.169 (sec). Leaf size: 26

DSolve[-y[x] + (a + x)*y'[x] + x^2*y''[x] == 0,y[x],x,IncludeSingularSolutions -> True]
                                                                                    
                                                                                    
 

\[ y(x)\to \frac {c_2 (a+x)}{a^2}+c_1 x e^{a/x} \]