8-2  ʹplotƶάͼΡ
0.01һ[0, 20]Χڵx 
Ȼڸ÷Χ xֵy1 Ȼ÷Χx-2.5ֵ
y2÷Χx+1.5ֵy3 MATLAB 7.1xλXϣ
y1 y2 y3 λYϡ
⣺¡
>> x= 0:0.01:10;
>> y1=sin(x);
>> y2 = cos(x-2.5);
>> y3 = tan(x+1.5);
>> plot(x,y1,x,y2,x,y3)
>>
