MATLAB畫圖，圖上有每個線的意義

 x=0:pi/10:2*pi; y1=sin(x); y2=0.6*sin(x); y3=0.3*sin(x); plot(x,y1,x,y2,'-o',x,y3,'-*') legend('曲線1','曲線2','曲線3')

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