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--- exercicio3 [2021/06/24 11:57] – tahzibi
+++ exercicio3 [Unknown date] (current) – removed - external edit (Unknown date) 127.0.0.1
@@ Line 1: / Line 1: @@
-  - Considere $D_N(x) = \sum_{-N}^{N} e^{inx}.$ Mostre que $D_N(x) = \frac{sen(N+\frac{1}{2})x}{sen(x/2)}$. Usando este mostre que
-$$
- s_N(f, x) = \frac{1}{2\pi} \int_{-\pi}^{\pi} f(x-t)D_N(t) dt.
-$$