Method of Frobenius with exponential coefficients

Click For Summary
SUMMARY

The discussion focuses on applying the Method of Frobenius to solve the ordinary differential equation (ODE) y'' + e^(-xy) = 0. The proposed solution form is y = ∑an*x^n, where the exponential term is expanded into a series around zero. The Cauchy product is utilized to handle the e^(-xy) term, allowing for the calculation of initial terms in the series. The specific solution for this equation is documented in an external resource.

PREREQUISITES
  • Understanding of ordinary differential equations (ODEs)
  • Familiarity with the Method of Frobenius
  • Knowledge of series expansion techniques
  • Experience with the Cauchy product for series
NEXT STEPS
  • Study the Method of Frobenius for variable coefficient ODEs
  • Learn about series expansions of exponential functions
  • Explore the Cauchy product and its applications in series
  • Review known solutions for specific ODEs, such as those listed on eqworld.ipmnet.ru
USEFUL FOR

Mathematicians, physicists, and students studying differential equations, particularly those interested in advanced solution techniques for ODEs with variable coefficients.

phil ess
Messages
67
Reaction score
0
I know how to do Frobenius on variable coefficient ODE's but only when the coefficients are powers of the independent variable. Can I do method of Frobenius on something like:

y'' + e-xy = 0 ?

What form would I assume a solution of? Just the regular y=sum(Akxk+r ?

Thanks for the help!
 
Physics news on Phys.org
I think you would let y = ∑anxn, expand the exponential in a series about 0 and use the Cauchy product for the e-xy term. You should be able to calculate the first few terms by hand and with luck maybe find a pattern.

If it is that specific equation you are interested in, the solution is known. See

http://eqworld.ipmnet.ru/en/solutions/ode/ode0227.pdf
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 5 ·
Replies
5
Views
16K
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 3 ·
Replies
3
Views
6K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 2 ·
Replies
2
Views
5K
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K