Internal
problem
ID
[13926]
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
19(a)
Date
solved
:
Wednesday, March 05, 2025 at 10:22:34 PM
CAS
classification
:
[[_2nd_order, _exact, _nonlinear], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_y_y1], [_2nd_order, _reducible, _mu_xy]]
ode:=x*diff(diff(y(x),x),x)+(6*x*y(x)^2+1)*diff(y(x),x)+2*y(x)^3+1 = 0; dsolve(ode,y(x), singsol=all);
ode=x*D[y[x],{x,2}]+(6*x*y[x]^2+1)*D[y[x],x]+2*y[x]^3+1==0; ic={}; DSolve[{ode,ic},y[x],x,IncludeSingularSolutions->True]
Not solved
from sympy import * x = symbols("x") y = Function("y") ode = Eq(x*Derivative(y(x), (x, 2)) + (6*x*y(x)**2 + 1)*Derivative(y(x), x) + 2*y(x)**3 + 1,0) ics = {} dsolve(ode,func=y(x),ics=ics)
NotImplementedError : The given ODE Derivative(y(x), x) - (-x*Derivative(y(x), (x, 2)) - 2*y(x)**3 - 1)/(6*x*y(x)**2 + 1) cannot be solved by the factorable group method