2.14 problem Problem 1(n)

Internal problem ID [10887]

Book: APPLIED DIFFERENTIAL EQUATIONS The Primary Course by Vladimir A. Dobrushkin. CRC Press 2015
Section: Chapter 4, Second and Higher Order Linear Differential Equations. Problems page 221
Problem number: Problem 1(n).
ODE order: 3.
ODE degree: 1.

CAS Maple gives this as type [[_3rd_order, _quadrature]]

\[ \boxed {y^{\prime \prime \prime }-1=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 20

dsolve(diff(y(x),x$3)=1,y(x), singsol=all)
 

\[ y \left (x \right ) = \frac {1}{6} x^{3}+\frac {1}{2} c_{1} x^{2}+x c_{2} +c_{3} \]

Solution by Mathematica

Time used: 0.003 (sec). Leaf size: 25

DSolve[y'''[x]==1,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to \frac {x^3}{6}+c_3 x^2+c_2 x+c_1 \\ \end{align*}