1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Fourier Coefficient

  1. Jul 24, 2010 #1
    1. The problem statement, all variables and given/known data

    Hello, i'm have to resolve a PDE. The result of that analysis and resolution is that fourier series, and i have to find the [tex]B_n[/tex] coefficient. because [tex]A_n[/tex] i found it.

    2. Relevant equations

    [tex]$21={\displaystyle \sum_{n=0}^{\infty}[2n\pi B_{n}-A_{n}]sin(\dfrac{n\pi x}{3})}$[/tex]

    with [tex]$1x\in[0,3]$[/tex]

    3. The attempt at a solution

    [tex]$2A_{n}=\dfrac{4}{3}\int_{0}^{3}sin(\dfrac{n\pi x}{3})$[/tex]
    Last edited: Jul 24, 2010
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted