10.8.2 problem 8

Internal problem ID [1274]
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 : 8
Date solved : Monday, January 27, 2025 at 04:49:21 AM
CAS classification : [[_2nd_order, _missing_x]]

\begin{align*} y^{\prime \prime }-2 y^{\prime }+6 y&=0 \end{align*}

✓ Solution by Maple

Time used: 0.000 (sec). Leaf size: 24

dsolve(diff(y(x),x$2) -2*diff(y(x),x)+6*y(x) = 0,y(x), singsol=all)
 

\[ y = {\mathrm e}^{x} \left (c_1 \sin \left (\sqrt {5}\, x \right )+c_2 \cos \left (\sqrt {5}\, x \right )\right ) \]

✓ Solution by Mathematica

Time used: 0.018 (sec). Leaf size: 32

DSolve[D[y[x],{x,2}]-2*D[y[x],x]+6*y[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to e^x \left (c_2 \cos \left (\sqrt {5} x\right )+c_1 \sin \left (\sqrt {5} x\right )\right ) \]