50.2.34 problem 33

Internal problem ID [10124]
Book : Own collection of miscellaneous problems
Section : section 2.0
Problem number : 33
Date solved : Tuesday, September 30, 2025 at 07:03:25 PM
CAS classification : [[_2nd_order, _linear, _nonhomogeneous]]

\begin{align*} y^{\prime \prime }-x y-x^{6}-x^{3}+42&=0 \end{align*}

✓ Maple. Time used: 0.004 (sec). Leaf size: 23

ode:=diff(diff(y(x),x),x)-x*y(x)-x^6-x^3+42 = 0; 
dsolve(ode,y(x), singsol=all);
 

\[ y = \operatorname {AiryAi}\left (x \right ) c_2 +\operatorname {AiryBi}\left (x \right ) c_1 -x^{5}-21 x^{2} \]

✓ Mathematica. Time used: 0.103 (sec). Leaf size: 67

ode=D[y[x],{x,2}]-x*y[x]-x^6-x^3+42==0; 
ic={}; 
DSolve[{ode,ic},y[x],x,IncludeSingularSolutions->True]
 

\begin{align*} y(x)&\to \operatorname {AiryAi}(x) \int _1^x-\pi \operatorname {AiryBi}(K[1]) \left (K[1]^6+K[1]^3-42\right )dK[1]+\operatorname {AiryBi}(x) \int _1^x\pi \operatorname {AiryAi}(K[2]) \left (K[2]^6+K[2]^3-42\right )dK[2]+c_1 \operatorname {AiryAi}(x)+c_2 \operatorname {AiryBi}(x) \end{align*}

✓ Sympy. Time used: 0.039 (sec). Leaf size: 12

from sympy import * 
x = symbols("x") 
y = Function("y") 
ode = Eq(-x**6 - x**3 - x*y(x) + Derivative(y(x), (x, 2)) + 42,0) 
ics = {} 
dsolve(ode,func=y(x),ics=ics)
 

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