matlab绘图函数详细介绍，包括绘制图的颜色、符号函数等。

A bandpass signal is defined by clear all t=-10:0.06:10 m=3*(cos(2*pi*10*t)+4*sin(2*pi*20*t)) x=6*m.*cos(2*pi*100*t) f0=100 fmax=100 NSamples=256 Amplitude Response plot of x(t) figure(1) subplot(211) plot(t,ab