9.13 problem 45

Internal problem ID [207]

Book: Differential equations and linear algebra, 3rd ed., Edwards and Penney
Section: Section 5.3, second order linear equations. Page 323
Problem number: 45.
ODE order: 2.
ODE degree: 1.

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

\[ \boxed {y^{\prime \prime }-2 i y^{\prime }+3 y=0} \]

Solution by Maple

Time used: 0.016 (sec). Leaf size: 19

dsolve(diff(y(x),x$2)-2*I*diff(y(x),x)+3*y(x)=0,y(x), singsol=all)
 

\[ y \left (x \right ) = c_{1} {\mathrm e}^{3 i x}+c_{2} {\mathrm e}^{-i x} \]

Solution by Mathematica

Time used: 0.017 (sec). Leaf size: 26

DSolve[y''[x]-2*I*y'[x]+3*y[x]==0,y[x],x,IncludeSingularSolutions -> True]
                                                                                    
                                                                                    
 

\[ y(x)\to e^{-i x} \left (c_1 e^{4 i x}+c_2\right ) \]