creating algorithm for specific computation

2 ビュー (過去 30 日間)
sermet
sermet 2018 年 9 月 19 日
コメント済み: Guillaume 2018 年 9 月 19 日
I need to perform below computation using algorithm approach.
t=100; % constant et=1:1:4; % the numbers of "et" are variable.
result=(((t-et(2))*(t-et(3))*(t-et(4)))/((et(1)-et(2))*(et(1)-et(3))*(et(1)-et(4))))+(((t-et(1))*(t-et(3))*(t-et(4)))/((et(2)-et(1))*(et(2)-et(3))*(et(2)-et(4))));
How can I create algorithm to perform above computation automatically with respect to the array number of et?

採用された回答

Guillaume
Guillaume 2018 年 9 月 19 日
If I understood correctly:
numerators = t - repmat(et(:), 1, numel(et)); %calculate t-et(1), t-et(2), etc.
numerators(logical(eye(size(numerators)))) = 1; %replace t-et by 1 on diagonal
numerators = prod(numerators);
denominators = et - et';
denominators(logical(eye(size(denominators)))) = 1;
denominators = prod(denominators);
result = sum(numerators ./ denominators);
However, the result of this is always going to be 1. So
result = 1;
may be simpler.
  2 件のコメント
Guillaume
Guillaume 2018 年 9 月 19 日
That would be because you're using an ancient version of matlab (< R2016b). In older versions:
denominators = bsxfun(@minus, et, et');

サインインしてコメントする。

その他の回答 (0 件)

カテゴリ

Find more on Operators and Elementary Operations in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by