Unformatted text preview: ∑ ∞ 1 (2 n1)6 . Hint: Use the Fourier expansions of the functions f ( x ) = sinh x , respectively g ( x ) = x ( π  x  ), (π < x ≤ π ). 2. Let l > 0. Show that s 2 l sin ± n1 2 ² πx l ∞ 1 is an orthonormal set on PC (0 , l )....
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 Fall '08
 FriedmannBrock
 Differential Equations, Equations, Partial Differential Equations, Fourier Series, Riemann, bn sin nx, Friedemann Brock Homework

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