18.11 problem 27.1 (k)

Internal problem ID [13539]

Book: Ordinary Differential Equations. An introduction to the fundamentals. Kenneth B. Howell. second edition. CRC Press. FL, USA. 2020
Section: Chapter 27. Differentiation and the Laplace transform. Additional Exercises. page 496
Problem number: 27.1 (k).
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [[_2nd_order, _linear, _nonhomogeneous]]

\[ \boxed {y^{\prime \prime }-4 y^{\prime }+13 y={\mathrm e}^{2 t} \sin \left (3 t \right )} \] With initial conditions \begin {align*} [y \left (0\right ) = 4, y^{\prime }\left (0\right ) = 3] \end {align*}

Solution by Maple

Time used: 0.078 (sec). Leaf size: 26

dsolve([diff(y(t),t$2)-4*diff(y(t),t)+13*y(t)=exp(2*t)*sin(3*t),y(0) = 4, D(y)(0) = 3],y(t), singsol=all)
 

\[ y \left (t \right ) = -\frac {{\mathrm e}^{2 t} \left (-24+t \right ) \cos \left (3 t \right )}{6}-\frac {29 \,{\mathrm e}^{2 t} \sin \left (3 t \right )}{18} \]

Solution by Mathematica

Time used: 0.032 (sec). Leaf size: 61

DSolve[{y''[t]-4*y'[t]+13*y[t]==Exp(2*t)*Sin[3*t],{y[0]==4,y'[0]==3}},y[t],t,IncludeSingularSolutions -> True]
 

\[ y(t)\to \frac {1}{600} \left (\left ((3 \text {Exp}-1000) e^{2 t}+3 \text {Exp} (10 t+1)\right ) \sin (3 t)+6 \left ((400-9 \text {Exp}) e^{2 t}+3 \text {Exp} (5 t+3)\right ) \cos (3 t)\right ) \]