Language.m ( File view )

  • By 宝马带斗 2013-11-27
  • View(s):186
  • Download(s):6
  • Point(s): 3
			function f = Language(x,y,x0)
syms t;
if(length(x) == length(y))
    n = length(x);    
else
    disp('x和y的维数不相等!');
    return;
end                                      %检错

f = 0.0;
for(i = 1:n)
    l = y(i); 
    for(j = 1:i-1)
        l = l*(t-x(j))/(x(i)-x(j));      
    end;
    for(j = i+1:n)
        l = l*(t-x(j))/(x(i)-x(j));      %计算拉格朗日基函数
    end;

    f = f + l;                           %计算拉格朗日插值函数      
    simplify(f);                         %化简

    if(i==n)
        if(nar
...
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Language.m (9.25 kB)

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