54.3.256 problem 1272

Internal problem ID [12551]
Book : Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section : Chapter 2, linear second order
Problem number : 1272
Date solved : Wednesday, October 01, 2025 at 02:06:35 AM
CAS classification : [[_2nd_order, _with_linear_symmetries]]

\begin{align*} 4 x^{2} y^{\prime \prime }+\left (4 a^{2} x^{2}+1\right ) y&=0 \end{align*}

✓ Maple. Time used: 0.002 (sec). Leaf size: 23

ode:=4*x^2*diff(diff(y(x),x),x)+(4*a^2*x^2+1)*y(x) = 0; 
dsolve(ode,y(x), singsol=all);
 

\[ y = \left (\operatorname {BesselJ}\left (0, x a \right ) c_1 +\operatorname {BesselY}\left (0, x a \right ) c_2 \right ) \sqrt {x} \]

✓ Mathematica. Time used: 0.014 (sec). Leaf size: 28

ode=(1 + 4*a^2*x^2)*y[x] + 4*x^2*D[y[x],{x,2}] == 0; 
ic={}; 
DSolve[{ode,ic},y[x],x,IncludeSingularSolutions->True]
 

\begin{align*} y(x)&\to \sqrt {x} (c_1 \operatorname {BesselJ}(0,a x)+c_2 \operatorname {BesselY}(0,a x)) \end{align*}

✓ Sympy. Time used: 0.051 (sec). Leaf size: 20

from sympy import * 
x = symbols("x") 
a = symbols("a") 
y = Function("y") 
ode = Eq(4*x**2*Derivative(y(x), (x, 2)) + (4*a**2*x**2 + 1)*y(x),0) 
ics = {} 
dsolve(ode,func=y(x),ics=ics)
 

\[ y{\left (x \right )} = \sqrt {x} \left (C_{1} J_{0}\left (a x\right ) + C_{2} Y_{0}\left (a x\right )\right ) \]