3.18 problem 1018

Internal problem ID [9353]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 2, linear second order
Problem number: 1018.
ODE order: 2.
ODE degree: 1.

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

\[ \boxed {y^{\prime \prime }+a \,{\mathrm e}^{b x} y=0} \]

Solution by Maple

Time used: 0.204 (sec). Leaf size: 39

dsolve(diff(diff(y(x),x),x)+a*exp(b*x)*y(x)=0,y(x), singsol=all)
 

\[ y \left (x \right ) = c_{1} \operatorname {BesselJ}\left (0, \frac {2 \sqrt {a}\, {\mathrm e}^{\frac {x b}{2}}}{b}\right )+c_{2} \operatorname {BesselY}\left (0, \frac {2 \sqrt {a}\, {\mathrm e}^{\frac {x b}{2}}}{b}\right ) \]

Solution by Mathematica

Time used: 0.041 (sec). Leaf size: 55

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

\[ y(x)\to c_1 \operatorname {BesselJ}\left (0,\frac {2 \sqrt {a} \sqrt {e^{b x}}}{b}\right )+2 c_2 \operatorname {BesselY}\left (0,\frac {2 \sqrt {a} \sqrt {e^{b x}}}{b}\right ) \]