1.50 problem 50

Internal problem ID [6341]

Book: Own collection of miscellaneous problems
Section: section 1.0
Problem number: 50.
ODE order: 2.
ODE degree: 1.

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

Solve \begin {gather*} \boxed {t y^{\prime \prime }+y^{\prime }=0} \end {gather*}

Solution by Maple

Time used: 0.016 (sec). Leaf size: 10

dsolve(t*diff(y(t),t$2)+diff(y(t),t)=0,y(t), singsol=all)
 

\[ y \relax (t ) = c_{2} \ln \relax (t )+c_{1} \]

Solution by Mathematica

Time used: 0.016 (sec). Leaf size: 13

DSolve[t*y''[t]+y'[t]==0,y[t],t,IncludeSingularSolutions -> True]
 

\begin{align*} y(t)\to c_1 \log (t)+c_2 \\ \end{align*}