function shili11

h0=figure(‘toolbar’,’none’,…

‘position’,[200 150 450 350],…

‘name’,’实例11′);

x=0:pi/20:2*pi;

y1=sin(x);

y2=cos(x);

h1=stem(x,y1+y2);

hold on

h2=plot(x,y1,’^r’,x,y2,’*g’);

hold off

h3=[h1(1);h2];

legend(h3,’y1+y2′,’y1=sin(x)’,’y2=cos(x)’)

xlabel(‘自变量X’);

ylabel(‘函数值Y’);

title(‘正弦函数与余弦函数的线性组合’);