From 1550091fd019f740f4d3a4007385194e11d8365a Mon Sep 17 00:00:00 2001
From: Hugo Sales <hugo@fc.up.pt>
Date: Wed, 21 Oct 2020 00:28:09 +0000
Subject: [PATCH] ex11: terminated.

---
 TP1b/DiogoEliseuHugo_TP2_11.m | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 TP1b/DiogoEliseuHugo_TP2_11.m

diff --git a/TP1b/DiogoEliseuHugo_TP2_11.m b/TP1b/DiogoEliseuHugo_TP2_11.m
new file mode 100644
index 0000000..ddcb8f9
--- /dev/null
+++ b/TP1b/DiogoEliseuHugo_TP2_11.m
@@ -0,0 +1,25 @@
+%% Inicialização do ambiente
+clear ; close all; clc
+
+%% Exercício 11
+n = 0:255; %% Inicialização do ambiente
+
+
+x = cos((20 * pi * n)/256) + cos((200 * pi * n)/256);
+
+figure
+subplot(3, 1, 1)
+stem(n, x)
+
+subplot(3, 1, 2)
+y1 = 0.5 * x + 0.4 * [x(1, 2:size(x, 2)) 0] + 0.3 * [x(1, 3:size(x, 2)) 0 0];
+stem(n, y1)
+
+subplot(3, 1, 3)
+y2 = zeros(size(n));
+y2(1) = y1(1);
+y2(2) = y1(2);
+for i = 3:255
+    y2(i) = y1(i) + 0.5 * y2(i - 1) - 0.4 * y2(i - 2);
+end
+stem(n, y2)