Legendre polynomials proof question.Help

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SUMMARY

This discussion focuses on solving Legendre polynomial problems using the generating function and Rodrigues' formula. Participants suggest using the generating function identity, specifically the equation 1/(1-2tx+t^2) = ∑ P_n(x)t^n, to derive solutions. The integral ∫_{0}^{π} (cos t)^{2n} dt is highlighted as a key step in the second problem. The conversation emphasizes the importance of differentiation with respect to x and equating coefficients to find the desired results.

PREREQUISITES
  • Understanding of Legendre polynomials and their properties
  • Familiarity with generating functions in combinatorial mathematics
  • Knowledge of differentiation techniques, particularly with respect to variables
  • Basic proficiency in integral calculus, specifically evaluating definite integrals
NEXT STEPS
  • Study the derivation and applications of Rodrigues' formula for Legendre polynomials
  • Learn how to manipulate generating functions and their series expansions
  • Explore techniques for evaluating integrals involving trigonometric functions
  • Investigate the relationship between Legendre polynomials and orthogonal functions
USEFUL FOR

Students and researchers in mathematics, particularly those focusing on polynomial theory, differential equations, and mathematical analysis. This discussion is beneficial for anyone seeking to deepen their understanding of Legendre polynomials and their applications.

  • #31
need suggestions?
 
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  • #32
aligator123 said:
at the last equation this equation remains

Pn'(1)=t*(n+2)(n+1)/2
The t can't be there. You have to change n in the original sum to n-1.
 

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