61.34.16 problem 16

Internal problem ID [12780]
Book : Handbook of exact solutions for ordinary differential equations. By Polyanin and Zaitsev. Second edition
Section : Chapter 2, Second-Order Differential Equations. section 2.1.3-1. Equations with exponential functions
Problem number : 16
Date solved : Tuesday, January 28, 2025 at 04:19:17 AM
CAS classification : [[_2nd_order, _with_linear_symmetries]]

\begin{align*} y^{\prime \prime }+2 k \,{\mathrm e}^{\mu x} y^{\prime }+\left (a \,{\mathrm e}^{2 \lambda x}+b \,{\mathrm e}^{\lambda x}+k^{2} {\mathrm e}^{2 \mu x}+k \mu \,{\mathrm e}^{\mu x}+c \right ) y&=0 \end{align*}

✗ Solution by Maple

dsolve(diff(y(x),x$2)+2*k*exp(mu*x)*diff(y(x),x)+(a*exp(2*lambda*x)+b*exp(lambda*x)+k^2*exp(2*mu*x)+k*mu*exp(mu*x)+c)*y(x)=0,y(x), singsol=all)
 

\[ \text {No solution found} \]

✓ Solution by Mathematica

Time used: 1.527 (sec). Leaf size: 232

DSolve[D[y[x],{x,2}]+2*k*Exp[\[Mu]*x]*D[y[x],x]+(a*Exp[2*\[Lambda]*x]+b*Exp[\[Lambda]*x]+k^2*Exp[2*\[Mu]*x]+k*\[Mu]*Exp[\[Mu]*x]+c)*y[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to 2^{\frac {1}{2}-\frac {i \sqrt {c}}{\lambda }} \left (e^x\right )^{\frac {1}{2}-\frac {\lambda }{2}} \left (\left (e^x\right )^{\mu }\right )^{\left .-\frac {1}{2}\right /\mu } \left (\left (e^x\right )^{\lambda }\right )^{\frac {1}{2}-\frac {i \sqrt {c}}{\lambda }} e^{-\frac {k \left (e^x\right )^{\mu }}{\mu }+\frac {i \sqrt {a} \left (e^x\right )^{\lambda }}{\lambda }} \left (c_1 \operatorname {HypergeometricU}\left (-\frac {\frac {i b}{\sqrt {a}}-\lambda +2 i \sqrt {c}}{2 \lambda },1-\frac {2 i \sqrt {c}}{\lambda },-\frac {2 i \sqrt {a} \left (e^x\right )^{\lambda }}{\lambda }\right )+c_2 L_{\frac {\frac {i b}{\sqrt {a}}-\lambda +2 i \sqrt {c}}{2 \lambda }}^{-\frac {2 i \sqrt {c}}{\lambda }}\left (-\frac {2 i \sqrt {a} \left (e^x\right )^{\lambda }}{\lambda }\right )\right ) \]