清空筛选条件
清空筛选条件

Hi,. I need support in doing a double summation in MATLAB. Thank you.

1 次查看（过去 30 天）
hani daniel
hani daniel 2017-4-28
评论： Adam 2017-4-28
Hi,
I need to do the following double summation ∑(i=0,2)∑(j=0,3)〖(2i+3j)〗in a MATLAB program. The answer should be 78. Thank you.
HD

请先登录，再回答此问题。

采纳的回答

hani daniel
hani daniel 2017-4-28
Hi Star Strider,
Thank you for your answer.
Regards
HD
  1 个评论
Adam
Adam 2017-4-28
Please just accept the answer you are happy with. Don't add your own answer to just say which answer works and then accept that! You can add comments to people's answers.

请先登录，再进行评论。

更多回答（3 个）

Stephen23
Stephen23 2017-4-28
>> M = bsxfun(@plus,2*(0:2),3*(0:3).');
>> sum(M(:))
ans = 78
hani daniel
hani daniel 2017-4-28
Hi Stephen,
Thank you for your answer, it is correct. However, as a beginner at MATLAM, I do not understand the bsxfun command. I was expecting to use a for loop type of solution. Please let me know of alternatives. Thank you.
Regards
HD
Star Strider
Star Strider 2017-4-28
There are likely several ways to code this (I assume this is a coding exercise, since the correct answer is provided).
This is one approach:
i = 0:2;
j = 0:3;
[I,J] = meshgrid(i, j);
f = @(i,j) 2*i + 3*j; % Anonymous Function
fmtx = f(I,J);
Answer = sum(fmtx(:))
I am not documenting it, leaving it for you to understand how it works.

类别

在 Help Center 和 File Exchange 中查找有关 Correlation and Convolution 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by