Linear Differential Equation in Strange Form

Click For Summary
SUMMARY

The discussion centers on the equation ydx - 4(x + y^6)dy = 0, which cannot be transformed into the standard linear form dy/dx + f(x)y = G(x) due to the presence of the non-linear term y^6. Participants clarify that to approach this problem, one must treat y as the independent variable and x as the dependent variable, leading to the formulation dx/dy - 4/y*x = 4y^6. The integrating factor for this transformed equation is identified as 1/y, which is essential for solving the differential equation.

PREREQUISITES
  • Understanding of linear differential equations
  • Familiarity with the concept of integrating factors
  • Knowledge of variable independence in differential equations
  • Ability to manipulate equations into standard forms
NEXT STEPS
  • Study the method of integrating factors in differential equations
  • Learn how to convert between independent and dependent variables in differential equations
  • Explore non-linear differential equations and their solutions
  • Investigate the implications of variable independence on differential equation solutions
USEFUL FOR

Students and educators in mathematics, particularly those focusing on differential equations, as well as anyone seeking to understand the nuances of linear and non-linear equation transformations.

Gooolati
Messages
21
Reaction score
0

Homework Statement



ydx - 4(x + y^6)dy = 0


Homework Equations



Need to get into the form of dy/dx + f(x)y = G(x)
(Standard Form)

The Attempt at a Solution



ydx = 4(x + y^6)dy

y = 4(x + y^6) dy/dx

y/4(x + y^6) = dy/dx

then I don't know how to get it in the Standard form
All help is appreciated, thanks!
 
Physics news on Phys.org
You can't. That's not a linear equation to begin with (y^6[/tex] is not linear) and you can't just force it into "standard form" for a linear equation.
 
Oh I can see that now! I just wonder why it's in the Linear Equations section haha.
 
See , sometimes in order to solve problems of this sort, we treat y as the independent variable and x as the dependent variable and convert it into a linear equation in the variable x.So now in place of dy/dx we have dx/dy and then we solve it using the integrating factor which in this case is 1/y.
 
Try dx/dy -4/y*x = 4y^6
 

Similar threads

Replies
3
Views
2K
Replies
4
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
Replies
3
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 25 ·
Replies
25
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
Replies
1
Views
976