15.14 problem 15

Internal problem ID [2247]

Book: Differential Equations by Alfred L. Nelson, Karl W. Folley, Max Coral. 3rd ed. DC heath. Boston. 1964
Section: Exercise 24, page 109
Problem number: 15.
ODE order: 2.
ODE degree: 1.

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

\[ \boxed {y^{\prime \prime }-y^{\prime }={\mathrm e}^{2 x} \sin \left (x \right ) x} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 33

dsolve(diff(y(x),x$2)-diff(y(x),x)=x*exp(2*x)*sin(x),y(x), singsol=all)
 

\[ y \left (x \right ) = \frac {\left (\left (-15 x +17\right ) \cos \left (x \right )+\sin \left (x \right ) \left (5 x +6\right )\right ) {\mathrm e}^{2 x}}{50}+{\mathrm e}^{x} c_{1} +c_{2} \]

Solution by Mathematica

Time used: 0.486 (sec). Leaf size: 46

DSolve[y''[x]-y'[x]==x*Exp[2*x]*Sin[x],y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to \frac {1}{50} e^{2 x} (5 x+6) \sin (x)-\frac {1}{50} e^{2 x} (15 x-17) \cos (x)+c_1 e^x+c_2 \]