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/* ** FRAND.C - Public domain by Larry Hudson */ #include #include #include "snipmath.h" #define TEN_PI 31.41592653589793 #define E 2.718281828459045 /*---------------------

%《数字信号处理教程——MATLAB释义与实现》第三章演示程序fgp311 % 离散信号的包络 % 电子工业出版社出版 陈怀琛编著 2004年9月 % t=[0:220]*0.1; % 设定连续时间向量 n=0:22;T=1; % 设定采样频率 w=[0.1,0.3]*pi;

%《数字信号处理教程——MATLAB释义与实现》第八章图8.5.2生成程序fgp852 % 二阶全通数字频带变换函数的四组曲线 % 电子工业出版社出版 陈怀琛编著 2004年9月 % clear,close all w=-linspace(-pi,pi,501); % 自变量相角数组的设定 alpha=input('alpha= ');

-- Copyright (C) 1991-2005 Altera Corporation -- Your use of Altera Corporation's design tools, logic functions -- and other software and tools, and its AMPP partner logic -- functions, and any o

clear clc subplot(2,2,1), fplot('humps',[0 1]) subplot(2,2,2), fplot('abs(exp(-j*x*(0:9))*ones(10,1))',[0 2*pi]) subplot(2,2,3), fplot('[tan(x),sin(x),cos(x)]',2*pi*[-1 1 -1 1]) subplot(2,2,4), f

syms t tao; y=2/3*exp(-t/2)*cos(sqrt(3)/2*t); %定义符号函数 s=subs(int(y,t,0,tao),tao,t); %获得积分函数 subplot(1,2,1),ezplot(y,[0,4*pi]);grid subplot(1,2,2),ezplot(s,[0,4*pi]);grid title('s = \inty(t)dt')

clf;t=0:pi/50:2*pi;y=sin(t);plot(t,y);axis([0,2*pi,-1.2,1.2]) text(pi/2,1,'\fontsize{16}\leftarrow\itsin(t)\fontname{隶书}极大值')

%exm06021_4.m th = [0:pi/50:2*pi]'; a = [0.5:.5:4.5]; X = cos(th)*a; Y = sin(th)*sqrt(25-a.^2); shg plot(X,Y) axis('equal'),xlabel('x'), ylabel('y') title('A set of Ellipses')

% exm10034_1.m t=(-3*pi:pi/50:3*pi)+eps; y=sin(t)./t; hline=plot(t,y); cm=uicontextmenu; % uimenu(cm,'label','Red','callback','set(hline,''color'',''r''),') uimenu(cm,'label','Blue','callback',

%exm06021_4.m th = [0:pi/50:2*pi]'; a = [0.5:.5:4.5]; X = cos(th)*a; Y = sin(th)*sqrt(25-a.^2); shg plot(X,Y) axis('equal'),xlabel('x'), ylabel('y') title('A set of Ellipses')