• 2021-04-14
    已知()x=0:2*pi/90:2*pi;()y1=sin(x);y2=cos(x),()分别在两张图上画出()y1()和()y2()的命令是A.()plot(x,y1);figure(2);plot(x,y2)()B.()plot(y1,y2)()C.()plot(x,y1);hold()on;plot(x,y2)()D.()plot(x,y1);plot(x,y2)