29.28 problem 137

Internal problem ID [10961]

Book: Handbook of exact solutions for ordinary differential equations. By Polyanin and Zaitsev. Second edition
Section: Chapter 2, Second-Order Differential Equations. section 2.1.2-4 Equation of form \(x^2 y''+f(x)y'+g(x)y=0\)
Problem number: 137.
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [[_2nd_order, _with_linear_symmetries]]

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

Solution by Maple

Time used: 0.016 (sec). Leaf size: 51

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

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

Solution by Mathematica

Time used: 0.04 (sec). Leaf size: 43

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

\[ y(x)\to e^{-a x} \left (\frac {c_1 (-a x)^{-b} \Gamma (b+1,-a x)}{a}+c_2 x^{-b}\right ) \]