HW #07
Due: 10/30/2023
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  1. password2.jpg
    What is the WiFi password ? Penalty if you actually compute the integral.


  2. By expanding x6 by the Fourier series, obtain


    n=1 
    1

    n6
    .
    Hint 1: Similar problem
    Hint 2: Sub x = π.
    Hint 3: Integrator - Use at your own risk.
    Hint 4: You can use the result of


    n=1 
    1

    n2
    = π2

    6
    .


    Integrate with respect to
    from to .

    Examples: Cos[x], Sin[m x], Exp[x], Pi, Infinity, Tan[x] etc..




  3. u"(x) − u(x) = x,     u(−π)=0,     u(π) = 0.
    1. Solve the above equation analytically.
    2. Solve the above equation using the Fourier series and plot the first two non-zero terms along with the exact solution for comparison.
      Use Fourier sine series.



File translated from TEX by TTH, version 4.03.
On 23 Oct 2023, 13:07.