xi_A= [0.2 0.4 0.6 0.8 1.0];
fxi_A= [0.98 0.92 0.81 0.64 0.38];
xi_B= [0.2,0.2+0.08*1,0.2+0.08*11,0.2+0.08*10]; %ææ±ï¼xi,yiï¼æ¨ªåæ
fxi_B= interp1(xi_A,fxi_A,xi_B,'linear')ï¼ %è¿æ¯çº¿æ§å·®å¼
fxi_C= interp1(xi_A,fxi_A,xi_B,'spline')ï¼ %è¿æ¯ï¼ä¸æ¬¡æ ·æ¡å½æ°ï¼
fxi_D= interp1(xi_A,fxi_A,xi_B,'newton')ï¼ %è¿æ¯ï¼çé¡¿å·®å¼ï¼
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