从负无穷加到正无穷的求和。
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如下求和的程序该怎么实现(二维情况)
β是属于二维平面上所有整数点集,除去原点。我自己写的函数如下:
function [Fp] = punctured(f,h)
sum=0;
for i=-10000:10000
for j=-10000:10000
if(i~=0||j~=0)
sum=sum+f(i*h,j*h);
end
end
end
Fp=(h^2)*sum;
end
这样计算精确度不高,而且计算用时挺长的, 应该怎么实现从负无穷加到正无穷呢?
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