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clear; q1=pi*2/3;q2=pi*1/3;q3=pi*3/2;q4=pi*6/6; %四个输入信号的方向 lam=1; %信号的波长 r=1; %天线阵列的半径 m1=1;m2=1;m3=1;m4=1;m5=1;m6=1;m7=1

function shili05 h0=figure('toolbar','none',... 'position',[200 150 450 250],... 'name','实例05'); t=0:pi/10:2*pi; [x,y]=meshgrid(t); subplot(2,2,1) plot(sin(t),cos(t)) axis equal sub

function shili06 h0=figure('toolbar','none',... 'position',[200 150 450 400],... 'name','实例06'); t=0:pi/10:2*pi; h=plot(t,sin(t)); xlabel('t=0到2\pi','fontsize',16); ylabel('sin(t)','fon

a=pi+sqrt(5) sa=sym('pi+sqrt(5)') Ca=class(a) Csa=class(sa) vpa(sa-a)

syms x y=(x+pi)*exp(abs(sin(x+pi))); yd=diff(y,x); xs0=solve(yd) yd_xs0=vpa(subs(yd,x,xs0),6) y_xs0=vpa(subs(y,x,xs0),6) y_m_pi=vpa(subs(y,x,-pi/2),6) y_p_pi=vpa(subs(y,x,pi/2),

a=-8; r_a=a^(1/3) p=[1,0,0,-a]; R=roots(p) MR=abs(R(1)); t=0:pi/20:2*pi; x=MR*sin(t); y=MR*cos(t); plot(x,y,'b:'),grid on hold on plot(R(2),'.','MarkerSize',30,'Color','r')

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') % title('y=sin(t)') xlabel('t') ylabel('y')

syms a r theta phi positive x=r*cos(theta);x=subs(x,r,a*theta); y=r*sin(theta);y=subs(y,r,a*theta); dLdth=sqrt(diff(x,theta)^2+diff(y,theta)^2); L=simple(int(dLdth,theta,0,phi)) L_2pi=sub

function [S,L]=exm060201(N,R,str) % Zhang Zhiyong 编写于 2006-1-31 switch nargin case 0 N=100;R=1;str='-b'; case 1 R=1;str='-b'; case 2 str='-b'; ca

clear all; clf; N=1224; f1=200; f2=700; f3=1100; dt=1/1024; sample=1/dt; randn('state',sum(100*clock)); dis=2*rand(1,