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x=linspace(0,2*pi,1000); y1=0.2*exp(-0.5*x).*cos(4*pi*x); y2=2*exp(-0.5*x).*cos(pi*x); k=find(abs(y1-y2)

x=-pi:.1:pi; y=sin(x); y1=sin(x); y2=cos(x); h=line(x,y1,'LineStyle',':','Color','g'); line(x,y2,'LineStyle','--','Color','b'); xlabel('-\pi \leq \Theta \leq \pi') ylabel('sin(\Theta)') title(

N=128; % 采样点数 T=1; % 采样时间终点 t=linspace(0,T,N); % 给出N个采样时间ti(I=1:N) x=12*sin(2*pi*10*t+pi/4)+5*cos(2*pi*40*t); % 求各采样点样本值x dt

x=0:pi/100:2*pi; y1=2*exp(-0.5*x); y2=cos(4*pi*x); plot(x,y1,x,y2) title('x from 0 to 2{\pi}'); %加图形标题 xlabel('Variable X'); %加X轴说明 ylabel('Variable Y');

x=0:pi/10:2*pi; y=2*sin(x); subplot(2,2,1);bar(x,y,'g'); title('bar(x,y,''g'')');axis([0,7,-2,2]); subplot(2,2,2);stairs(x,y,'b'); title('stairs(x,y,''b'')');axis([0,7,-2,2]); subplot(2,2,3);ste

x=0:pi/50:2*pi; y=sin(x); z=cos(x); plot(x,y,'r',x,z,'g'); %绘制两根不同曲线 Hl=get(gca,'Children'); %获取两曲线句柄向量Hl for k=1:size(Hl) if get(Hl(k),'Color')==[0 1 0] %[0 1 0]代表

x=0:pi/100:2*pi; y1=0.2*exp(-0.5*x).*cos(4*pi*x); plot(x,y1) hold on y2=2*exp(-0.5*x).*cos(pi*x); plot(x,y2); hold off

#include #define pi 3.1415 double gaussian(double x) { double resu; resu=-0.5*x*x; resu=exp(resu); resu=resu/sq

****************************************************************************** * FILE: c25cxrad2.mac --> macro file for radix 2 fft's based on 320c5x * *

%Design a IIR filter using bilinear transformation %wp=0.2*pi,ws=0.3*pi,rp=0.25dB,rs=50dB clear all; wp=0.2*pi;ws=0.3*pi; rp=0.25;rs=50; Fs=200; %sampling frequency Ts=1/Fs; Wp=2/Ts*tan(wp/2.