绘制抽样函数Sa(x)matlab代码
x=linspace(-5*pi,5*pi,10000);y=sin(x)./x;subplot(2,1,1);plot(x,y,'k','LineWidth',1.2);grid on;set(gca,'xlim',[-5*pi,5*pi]);%设置x轴坐标范围set(gca,'xtick',-5*pi:pi:5*pi);%设置x轴坐标间隔set(gca,'ylim',[-0.4,1]);%设置x轴坐标范围set(gca,'ytick',-0.4:0.2:1);%设置x轴坐标间隔set(
