how to solve equation for a given matrix

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engineer 2019-5-23

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https://ww2.mathworks.cn/matlabcentral/answers/463662-how-to-solve-equation-for-a-given-matrix

评论： Adam Danz 2019-5-23

采纳的回答： Adam Danz

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Hi everybody

I have got equation which is ;

Eq = 0.4075*exp(-((e-14.87)/11.39).^2) + 0.5621*exp(-((e-18.64)/27.74).^2);

e is a 100*1 double matrix.

I would like to use the value of each row as an input to my function and save the results as matrix again. I used solve command, I could get any results.

Any suggestion is highly appreciated.

Thanks!!

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engineer 2019-5-23

Yes I have it 'e' as 100*1 double matrix. I just need to implement each value into the function and obtain the results as another matrix.

madhan ravi 2019-5-23

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e = .... 100 X 1 values
Eq = 0.4075*exp(-((e-14.87)/11.39).^2) + 0.5621*exp(-((e-18.64)/27.74).^2); % doesn't this get you the required results?

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Adam Danz 2019-5-23

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https://ww2.mathworks.cn/matlabcentral/answers/463662-how-to-solve-equation-for-a-given-matrix#answer_376373

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What's wrong with what you've already got?

%Vector method
e = rand(100,1)*10; 
Eq = 0.4075*exp(-((e-14.87)/11.39).^2) + 0.5621*exp(-((e-18.64)/27.74).^2);
% Loop method
Eq2 = zeros(size(e)); 
for i = 1:numel(e)
    Eq2(i) = 0.4075*exp(-((e(i)-14.87)/11.39).^2) + 0.5621*exp(-((e(i)-18.64)/27.74).^2);
end
% Are they equal?
isequal(Eq,Eq2)  % = 1;  yes