5.20 problem 5

Internal problem ID [11428]

Book: A First Course in Differential Equations by J. David Logan. Third Edition. Springer-Verlag, NY. 2015.
Section: Chapter 1, First order differential equations. Section 1.4.1. Integrating factors. Exercises page 41
Problem number: 5.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_separable]

\[ \boxed {x^{\prime }-2 t x=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 10

dsolve(diff(x(t),t)=2*t*x(t),x(t), singsol=all)
 

\[ x \left (t \right ) = c_{1} {\mathrm e}^{t^{2}} \]

Solution by Mathematica

Time used: 0.037 (sec). Leaf size: 18

DSolve[x'[t]==2*t*x[t],x[t],t,IncludeSingularSolutions -> True]
 

\begin{align*} x(t)\to c_1 e^{t^2} x(t)\to 0 \end{align*}