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jsjs0827

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mlypplover

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jsjs0827: ½ð±Ò+10, ¡ïÓаïÖú 2016-01-03 10:15:10
¾Ù¸öÀý×Ó°É ÒÑÖª²åÖµµã(-2.00,17.00), (0.00,1.00), (1.00,2.00), (2.00,17.00),ÇóÈý´Î²åÖµ¶àÏîʽ£¬²¢¼ÆËã .
ÆäMatlab³ÌÐòÈçÏ£º
function yy=M10(x,y,xx)
m=length(x);n=length(y);
if m~=n, error('ÏòÁ¿xÓëyµÄ³¤¶È±ØÐëÒ»ÖÂ');end
s=0;
for i=1:n
   t=ones(1,length(xx));
   for j=1:n
      if j~=i
          t=t.*(xx-x(j))/(x(i)-x(j));
      end
   end
   s=s+t*y(i);
end
  yy=s;
ÔÚMatlab´°¿ÚÖÐÖ´ÐУº
x=[-2.00 0.00 1.00 2.00];
y=[17.00 1.00 2.00 17.00];
xx=0.6;
M10(x,y,xx)
½á¹ûÈçÏ£º
ans =
   0.25600000000000
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ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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