Calling multiple .m files into separate function

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Mughees Asif 2019-3-19

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/450846-calling-multiple-m-files-into-separate-function

评论： Walter Roberson 2019-3-19

function [B, H] = IsStable(polynomial)
if polynomial ~= AllNonZero(polynomial(false))
    B=0;
    H=[];
elseif polynomial ~= AllSameSign(polynomial(false))
    B=0;
    H=[];
else 
    H=HurwitzMatrix(polynomial);
    pm = length(H);                       
        for i=1:pm
        minor(i)=det(polynomial(1:i,1:i));             
        end
            if minor(i)>0
                B=1;    
            else
                B=0;
            end
end

I am trying to calculate the stability of a Hurwitz Matrix by checking if the principle minors are more than zero. Any sugestions to improve the above code as it is not working when I call three separate .m files e.g. AllNonZero, AllSameSign and HurwitzMatrix? Thank you.