5.6 problem 8

Internal problem ID [3119]

Book: Differential equations with applications and historial notes, George F. Simmons, 1971
Section: Chapter 2, End of chapter, page 61
Problem number: 8.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_linear]

\[ \boxed {x y^{\prime }+y=\cos \left (x \right ) x} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 16

dsolve(x*diff(y(x),x)+y(x)=x*cos(x),y(x), singsol=all)
 

\[ y \left (x \right ) = \frac {\cos \left (x \right )+x \sin \left (x \right )+c_{1}}{x} \]

Solution by Mathematica

Time used: 0.034 (sec). Leaf size: 18

DSolve[x*y'[x]+y[x]==x*Cos[x],y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to \frac {x \sin (x)+\cos (x)+c_1}{x} \]