Solve Eigenfunctions & Eigenvalues w/Ly=-y'', Boundary Conditions

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SUMMARY

The discussion focuses on solving eigenfunctions and eigenvalues for the operator Ly=-y'' with boundary conditions y(0)=0 and y'(1)=0. Participants emphasize the importance of consistency in index variable naming, recommending the use of either 'n' or 'k' throughout the calculations. Additionally, it is crucial to start the summation from n=0 to achieve the correct results. The goal is to express f(x)=x²-2x as a series of the eigenfunctions and calculate the series sum.

PREREQUISITES
  • Understanding of differential operators, specifically Ly=-y''
  • Knowledge of boundary value problems and their conditions
  • Familiarity with eigenvalues and eigenfunctions
  • Basic skills in series expansion and summation techniques
NEXT STEPS
  • Research the method of separation of variables for solving boundary value problems
  • Learn about Sturm-Liouville theory and its applications in finding eigenvalues
  • Study the properties of orthogonal functions and their use in series expansions
  • Explore numerical methods for approximating eigenvalues and eigenfunctions
USEFUL FOR

Students and educators in mathematics, particularly those studying differential equations, boundary value problems, and eigenvalue problems. This discussion is beneficial for anyone looking to deepen their understanding of eigenfunctions and their applications in mathematical analysis.

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Homework Statement


Find eigenfunctions and eigenvalues to the operator
Ly=-y''
boundary conditions are y(0)=y'(1)=0. express f(x)=x2-2x as aseries of the eigenfunctions. use this to calculate \sum\frac{1}{(2k+1)<sup>6</sup>}


Homework Equations





The Attempt at a Solution


i attempted as shown in attached files but did not get the right answer can anyone help me
 

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Your results, so far, look okay to me. You need to decide on whether your index variable is going to be called n or k. Stick with just one. Also, the summation should start from n=0, not n=1.
 

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