28.5 problem 65

Internal problem ID [10899]

Book: Handbook of exact solutions for ordinary differential equations. By Polyanin and Zaitsev. Second edition
Section: Chapter 2, Second-Order Differential Equations. section 2.1.2-3 Equation of form \((a x + b)y''+f(x)y'+g(x)y=0\)
Problem number: 65.
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [[_Emden, _Fowler], [_2nd_order, _linear, `_with_symmetry_[0,F(x)]`]]

\[ \boxed {x y^{\prime \prime }+n y^{\prime }+b \,x^{-2 n +1} y=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 43

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

\[ y = c_{1} \sin \left (\frac {x^{1-n} \sqrt {b}}{n -1}\right )+c_{2} \cos \left (\frac {x^{1-n} \sqrt {b}}{n -1}\right ) \]

Solution by Mathematica

Time used: 0.072 (sec). Leaf size: 52

DSolve[x*y''[x]+n*y'[x]+b*x^(1-2*n)*y[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to c_1 \cos \left (\frac {\sqrt {b} x^{1-n}}{n-1}\right )+c_2 \sin \left (\frac {\sqrt {b} x^{1-n}}{1-n}\right ) \]