Series solutions for differential equation

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SUMMARY

The discussion focuses on solving the differential equation 3xy'' + y' - y = 0 using power series methods. It highlights that the equation is singular at x=0, leading to two independent solutions, one of which is singular. The participants emphasize the necessity of searching for the series solution near a regular singular point to obtain the nonsingular solution. The conversation concludes that the power series approach will yield only the nonsingular solution due to the nature of the differential equation.

PREREQUISITES
  • Understanding of power series expansions
  • Familiarity with differential equations and their classifications
  • Knowledge of singular points in differential equations
  • Ability to manipulate series coefficients
NEXT STEPS
  • Research methods for finding series solutions near regular singular points
  • Study the theory behind singular differential equations
  • Explore the Frobenius method for solving differential equations
  • Learn about the convergence of power series solutions
USEFUL FOR

Students and educators in mathematics, particularly those studying differential equations, as well as researchers seeking to understand series solutions and singular points in mathematical analysis.

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Homework Statement



Use the power series to solve the following differential equations, state the first four terms of the two independent solutions.

3xy'' + y' - y = 0

Homework Equations



The power series.

The Attempt at a Solution



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How do I get two independent solutions out of this? All of my coefficients will depend on the first a...?
 
Last edited:
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Your differential equation is singular at x=0. There are two solutions but one of them is singular at x=0. Your power series solution will only pick up the nonsingular one.
 
Ah ok, so the problem is screwed up from the beginning, thanks :)
 
Search for the form of the series solution near a regular singular point.
 

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