x0=2;x1=2;x2=8;x3=3;x4=5;x5=4;%--------假设的值for i=1:21 u=0:0.05:1; x(i)=x0+x1*power(u(i),2)+x2*power(u(i),3)+x3*power(u(i),3)+x4*power(u(i),4)+x5*power(u(i),5);end