I run this identity test and get this response....what am I doing wrong

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David Craven
David Craven 2017-9-9
编辑： Stephen23 2017-9-9
function result = singularitytest(A)
d = det(A);
c = cond(d) <= 1e-10;
end
Output argument "result" (and maybe others) not assigned during call to "singularitytest".

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回答（1 个）

Stephen23
Stephen23 2017-9-9
编辑：Stephen23 2017-9-9
You define a function with one output argument result:
function result = singularitytest(A)
Inside the function you define several variables, but you do not define result anywhere. Thus the error: if you do not tell MATLAB what result is, how do you expect it to return anything?
Perhaps you meant to do this:
function result = singularitytest(A)
d = det(A);
result = cond(d) <= 1e-10;
end

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