8.26 problem 40

Internal problem ID [648]

Book: Elementary differential equations and boundary value problems, 10th ed., Boyce and DiPrima
Section: Chapter 3, Second order linear equations, 3.3 Complex Roots of the Characteristic Equation , page 164
Problem number: 40.
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [[_Emden, _Fowler]]

\[ \boxed {t^{2} y^{\prime \prime }-t y^{\prime }+5 y=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 21

dsolve(t^2*diff(y(t),t$2)- t*diff(y(t),t)+5*y(t) = 0,y(t), singsol=all)
 

\[ y \left (t \right ) = c_{1} t \sin \left (2 \ln \left (t \right )\right )+c_{2} t \cos \left (2 \ln \left (t \right )\right ) \]

Solution by Mathematica

Time used: 0.023 (sec). Leaf size: 24

DSolve[t^2*y''[t]-t*y'[t]+5*y[t]==0,y[t],t,IncludeSingularSolutions -> True]
 

\[ y(t)\to t (c_2 \cos (2 \log (t))+c_1 \sin (2 \log (t))) \]