44.1.25 problem 3(a)

Internal problem ID [9083]
Book : Differential Equations: Theory, Technique, and Practice by George Simmons, Steven Krantz. McGraw-Hill NY. 2007. 1st Edition.
Section : Chapter 1. What is a differential equation. Section 1.2 THE NATURE OF SOLUTIONS. Page 9
Problem number : 3(a)
Date solved : Tuesday, September 30, 2025 at 06:03:50 PM
CAS classification : [_quadrature]

\begin{align*} y^{\prime }&=x \,{\mathrm e}^{x} \end{align*}

With initial conditions

\begin{align*} y \left (1\right )&=3 \\ \end{align*}

✓ Maple. Time used: 0.023 (sec). Leaf size: 12

ode:=diff(y(x),x) = x*exp(x); 
ic:=[y(1) = 3]; 
dsolve([ode,op(ic)],y(x), singsol=all);
 

\[ y = \left (x -1\right ) {\mathrm e}^{x}+3 \]

✓ Mathematica. Time used: 0.004 (sec). Leaf size: 14

ode=D[y[x],x]==x*Exp[x]; 
ic={y[1]==3}; 
DSolve[{ode,ic},y[x],x,IncludeSingularSolutions->True]
 

\begin{align*} y(x)&\to e^x (x-1)+3 \end{align*}

✓ Sympy. Time used: 0.074 (sec). Leaf size: 12

from sympy import * 
x = symbols("x") 
y = Function("y") 
ode = Eq(-x*exp(x) + Derivative(y(x), x),0) 
ics = {y(1): 3} 
dsolve(ode,func=y(x),ics=ics)
 

\[ y{\left (x \right )} = x e^{x} - e^{x} + 3 \]