拉格朗日插值总是不对matlab找了很多个拉格朗日插值的代码,比如下面这个function y=lag(x0,y0,x)n=length(x0);m=length(x);for i=1:mz=x;s=0;for k=1:nL=1;for j=1:nif =kL=L.*abs((z-x0(j)))/(x0(k)-x0(j));endends=s+L*y0(k);endy=s;en
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![拉格朗日插值总是不对matlab找了很多个拉格朗日插值的代码,比如下面这个function y=lag(x0,y0,x)n=length(x0);m=length(x);for i=1:mz=x;s=0;for k=1:nL=1;for j=1:nif =kL=L.*abs((z-x0(j)))/(x0(k)-x0(j));endends=s+L*y0(k);endy=s;en](/uploads/image/z/7176176-8-6.jpg?t=%E6%8B%89%E6%A0%BC%E6%9C%97%E6%97%A5%E6%8F%92%E5%80%BC%E6%80%BB%E6%98%AF%E4%B8%8D%E5%AF%B9matlab%E6%89%BE%E4%BA%86%E5%BE%88%E5%A4%9A%E4%B8%AA%E6%8B%89%E6%A0%BC%E6%9C%97%E6%97%A5%E6%8F%92%E5%80%BC%E7%9A%84%E4%BB%A3%E7%A0%81%2C%E6%AF%94%E5%A6%82%E4%B8%8B%E9%9D%A2%E8%BF%99%E4%B8%AAfunction+y%3Dlag%28x0%2Cy0%2Cx%29n%3Dlength%28x0%29%3Bm%3Dlength%28x%29%3Bfor+i%3D1%3Amz%3Dx%3Bs%3D0%3Bfor+k%3D1%3AnL%3D1%3Bfor+j%3D1%3Anif+%3DkL%3DL.%2Aabs%28%28z-x0%28j%29%29%29%2F%28x0%28k%29-x0%28j%29%29%3Bendends%3Ds%2BL%2Ay0%28k%29%3Bendy%3Ds%3Ben)
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