How to solve this in matlab?

Question

Amir Hamzah UTeM 2011-4-26

0
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https://ww2.mathworks.cn/matlabcentral/answers/6272-how-to-solve-this-in-matlab

Hi,did someone know how to convert this equation in matlab?i know this is easy since matlab have build in function.but i cant figure it how to do that in matlab,still new in matlab..

?Xab.Kab

a=1...nth value

b=1...nth value

Xab = X in pattern a and pattern b

Kab = K in pattern a and pattern b

thanks.

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Amir Hamzah UTeM 2011-4-26

i want to solve sum(Xab.Kab) that sum symbol cant view here.. :(

Matt Fig 2011-4-26

So is Walter's solution what you are looking for? If not, and Paulo's is not either, please give a simple example, such as:

X = [2 3 4 8];

K = [7 5 6 9];

What do you want from these two vectors? Or do you need to work on arrays, such as:

X = [2 3; 4 8];

K = [7 5; 6 9];

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Answer 1

Paulo Silva 2011-4-26

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https://ww2.mathworks.cn/matlabcentral/answers/6272-how-to-solve-this-in-matlab#answer_8693

在 MATLAB Online 中打开

%pre-allocate the vectors for Xab and Kab
Xab=zeros(1,na+nb-1);
Kab=0*Xab;
% can't decode this %?Xab.Kab
for a=1:na %a=1...nth value
    for b=1:nb %b=1...nth value
        Xab(a+b-1)=X; %Xab = X in pattern a and pattern b
        Kab(a+b-1)=K; %Kab = K in pattern a and pattern b
    end
end