How to solve an ODE in powers of x?

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SUMMARY

The discussion focuses on solving Legendre's differential equation, represented as \((1-x^2)y''-2xy'+n(n+1)y=0\), where \(n\) is a natural number. The solutions to this equation are the Legendre polynomials, which are essential in various applications, including physics and engineering. Participants emphasize the importance of understanding the structure of the equation to effectively derive the solutions.

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  • Understanding of differential equations, specifically second-order linear equations.
  • Familiarity with Legendre polynomials and their properties.
  • Basic knowledge of power series and their convergence.
  • Experience with mathematical notation and manipulation of equations.
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  • Study the derivation and properties of Legendre polynomials.
  • Learn about power series solutions for differential equations.
  • Explore applications of Legendre polynomials in physics, particularly in solving problems involving spherical coordinates.
  • Practice solving second-order linear differential equations using various methods, including the Frobenius method.
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Students and professionals in mathematics, physics, and engineering who need to solve differential equations, particularly those involving Legendre polynomials.

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I have this question due soon and I have no idea how to do it. Please help me get started on it

Solve in powers of x: (1-x^2)y''-2xy'+42y=0
 
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Re: Solving in powers

The equation:

$$\left(1-x^2\right)y''-2xy'+n(n+1)y=0$$

where $n\in\mathbb{N}$ is called Legendre's differential equation which has as solutions:

Legendre polynomials

That should give you a place to start. :D
 
Thank You, Mark! I'll try working on it and reply with any problems I have
 

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