how can i do this summation
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I have two summation ,a=0 to a=m+1 and b=0 to b=n+1,where m=100,n=50.?
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Azzi Abdelmalek
2013-9-18
编辑:Azzi Abdelmalek
2013-9-18
s=zeros(1,88);
for k=1:88
for a=0:n+1
for b=0:m+1
s(k)=s(k)+v(a+1,b+1)^(k+1)-v(a+1,b+1)^k
end
end
end
s=s/(m*n)
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Walter Roberson
2013-9-18
Supposing that f(a,b) gives you the term you are summing, then
[A, B] = ndgrid(0:m+1, 0:n+1);
fAB = arrayfun(@f, A, B);
sum(fAB(:))
or
fAB = bsxfun(@f, (0:m+1).', 0:n+1);
sum(fAB(:))
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