73.17.29 problem 29

Internal problem ID [15492]
Book : Ordinary Differential Equations. An introduction to the fundamentals. Kenneth B. Howell. second edition. CRC Press. FL, USA. 2020
Section : Chapter 25. Review exercises for part III. page 447
Problem number : 29
Date solved : Monday, March 31, 2025 at 01:39:23 PM
CAS classification : [[_2nd_order, _missing_y]]

\begin{align*} x y^{\prime \prime }&=3 y^{\prime } \end{align*}

✓ Maple. Time used: 0.003 (sec). Leaf size: 11

ode:=x*diff(diff(y(x),x),x) = 3*diff(y(x),x); 
dsolve(ode,y(x), singsol=all);
 

\[ y = c_2 \,x^{4}+c_1 \]

✓ Mathematica. Time used: 0.01 (sec). Leaf size: 17

ode=x*D[y[x],{x,2}]==3*D[y[x],x]; 
ic={}; 
DSolve[{ode,ic},y[x],x,IncludeSingularSolutions->True]
 

\[ y(x)\to \frac {c_1 x^4}{4}+c_2 \]

✓ Sympy. Time used: 0.131 (sec). Leaf size: 8

from sympy import * 
x = symbols("x") 
y = Function("y") 
ode = Eq(x*Derivative(y(x), (x, 2)) - 3*Derivative(y(x), x),0) 
ics = {} 
dsolve(ode,func=y(x),ics=ics)
 

\[ y{\left (x \right )} = C_{1} + C_{2} x^{4} \]