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a(0) / 2 +
el residuo(n) = f(x) - Sn(x) = 1/PI Sn(x) = 1/PI Dn(x) = Dirichlet kernel = 1/2 + cos x + cos 2x + .. + cos nx = [ sin(n + 1/2)x ] / [ 2sin(x/2) ] Teorema de Riemann.
Si f(x) es continuo a excepción de un número
finito de saltos finitos en todos los intervalos finitos pues:
lim(k->
A(0) / 2 + 1/PI
f(x) =
si f(x) = f(-x) pues
(Transform) Fourier coseno g(x) = (Transform) Fourier seno g(x) = Si f(-x) = f(x) pues Transform Fourier coseno ( Tranform Fourier coseno (f(x)) ) = f(x)Si f(-x) = -f(x) pues Transform Fourier seno (Transform Fourier seno (f(x)) ) = f(x) |
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