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lagrange.m %lagrange insert function y=lagrange (x0, y0, x) n=length (x0);m=length (x); for i=1:m x=x (i); s=0.0; for k=1:n p=1.0; for j=1:n if j~=k p=p*(x-x0(j))/(x0(k)-x0(j)); end end s=p*y0 (k)+s; end y(i)=s; end Õâ¸ö³ÌÐò²»ÖªµÀΪʲôÔËÐв»ÁË£¬Çó¸÷λ°ï°ï棬ÏÈллÁË¡£ |
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