1.20 problem 20

Internal problem ID [467]

Book: Elementary differential equations and boundary value problems, 10th ed., Boyce and DiPrima
Section: Section 2.1. Page 40
Problem number: 20.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_linear]

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

Solution by Maple

Time used: 0.015 (sec). Leaf size: 17

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

\[ y \left (t \right ) = \frac {t -1+2 \,{\mathrm e}^{-t}}{t} \]

Solution by Mathematica

Time used: 0.034 (sec). Leaf size: 23

DSolve[{(1+t)*y[t]+t*y'[t]== t,y[Log[2]]==1},y[t],t,IncludeSingularSolutions -> True]
 

\[ y(t)\to \frac {e^{-t} \left (e^t (t-1)+2\right )}{t} \]