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Commit 66ad09a3 authored by guillaum.pin's avatar guillaum.pin
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Update exercices/fourier_serie1.md

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......@@ -216,7 +216,7 @@ Corrigé +.#
En utilisant la formule
$$
f[n]=\sum_{k=0}^{N-1}\hat f[n]e^{2\pi ink/N},
f[n]=\sum_{k=0}^{N-1}\hat f[k]e^{2\pi ink/N},
$$
on peut calculer la TFD de $\hat f=\{2, -1-i, 0, -1+i\}$ avec $N=4$.
On obtient donc
......
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