1.354 problem 359

Internal problem ID [7088]

Book: Collection of Kovacic problems
Section: section 1
Problem number: 359.
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [_Laguerre]

Solve \begin {gather*} \boxed {x y^{\prime \prime }-\left (x +1\right ) y^{\prime }+y=0} \end {gather*}

Solution by Maple

Time used: 0.015 (sec). Leaf size: 14

dsolve(x*diff(y(x),x$2)-(x+1)*diff(y(x),x)+y(x)=0,y(x), singsol=all)
 

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

Solution by Mathematica

Time used: 0.024 (sec). Leaf size: 19

DSolve[x*y''[x]-(x+1)*y'[x]+y[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to c_1 e^x-c_2 (x+1) \\ \end{align*}