rt=[1 1.4 1.6 2 2.4 2.6 3 3.6 4 4.6 5 6]; >> y=[0.264241 0.408167 0.475069 0.593994 0.691559 0.732615 0.800852 0.874311 0.908422 0.94371 0.959572 0.982649]; >> A=polyfit(rt,y,2) z=polyval(A,rt); plot(...嗯，我看到了，谢了