matlab绘制动态8

      a=6; b=3; t=0:0.01:1; x=a*cos(degtorad(t*360)); y=b*sin(degtorad(t*(2*360))); v=[x;y]; x_center = 1; y_center = 3; center = repmat([x_center; y_center], 1, length(x)); set(gca,'color',[0,0,0]);

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