Triple Summation in Matlab
6 次查看(过去 30 天)
显示 更早的评论
Following Formula uses triple index summation.
How can I achieve this in matlab. All of the terms being summed are row vectors ( coefficients of polynomial ) except f(xi , yj , zk) is a row vector of numbers.
5 个评论
Walter Roberson
2020-6-29
size of f(xi ,yj ,zk) is equal to (size of x) * (size of y) * (size of z)
That means that given scalar xi, yj, zk, then f(xi, yj, zk) is a 3 dimensional array. A 3 dimensional array is not a "row vector"
p=length(x)
That disagrees with p=2 for x = [x0 x1 x2] . It looks to me as if p is the degree of the polynomial implied by x, which would be length(x)-1
This simply means that from lagrange coefficients matrix we have to use first row which is a polynomial.
As in sum(L3(1,:) .* x.^(length(x)-1:-1:0)) ?
回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Matrix Indexing 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!