- #1
touqra
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First off, this is not a homework problem. I was reading Charles Kittel solid states book on Chapter 2, equation 3:
electron number density, n(x), expanded in a Fourier series:
[tex] n(x) = n_0 + \sum_{p} [C_p cos(\frac{2\pi p x}{a}) + S_p sin(\frac{2\pi p x}{a})] [/tex]
From this expansion, wouldn't the density n(x = 0) be infinity ? since [tex]C_p[/tex] shouldn't be zero for the Fourier expansion to make sense.
electron number density, n(x), expanded in a Fourier series:
[tex] n(x) = n_0 + \sum_{p} [C_p cos(\frac{2\pi p x}{a}) + S_p sin(\frac{2\pi p x}{a})] [/tex]
From this expansion, wouldn't the density n(x = 0) be infinity ? since [tex]C_p[/tex] shouldn't be zero for the Fourier expansion to make sense.
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