1.18 problem 18

Internal problem ID [465]

Book: Elementary differential equations and boundary value problems, 10th ed., Boyce and DiPrima
Section: Section 2.1. Page 40
Problem number: 18.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_linear]

\[ \boxed {2 y+t y^{\prime }=\sin \left (t \right )} \] With initial conditions \begin {align*} \left [y \left (\frac {\pi }{2}\right ) = 1\right ] \end {align*}

Solution by Maple

Time used: 0.016 (sec). Leaf size: 22

dsolve([2*y(t)+t*diff(y(t),t) = sin(t),y(1/2*Pi) = 1],y(t), singsol=all)
 

\[ y \left (t \right ) = \frac {\sin \left (t \right )-\cos \left (t \right ) t +\frac {\pi ^{2}}{4}-1}{t^{2}} \]

Solution by Mathematica

Time used: 0.034 (sec). Leaf size: 26

DSolve[{2*y[t]+t*y'[t] == Sin[t],y[Pi/2]==1},y[t],t,IncludeSingularSolutions -> True]
 

\[ y(t)\to \frac {4 \sin (t)-4 t \cos (t)+\pi ^2-4}{4 t^2} \]