why does the imaginary part show?

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xueqi
xueqi 2013-5-17
Hi, I use matlab to calcuate something for me, and the expressions is
pf=edw*([d12-coef1^(1/r)*d11,d22-coef1^(1/r)*d21;...
d13-coef2^(1/r)*d11,d23-coef2^(1/r)*d21]\[coef1^(1/r)-1;coef2^(1/r)-1]);
all the parameters are read in from the excel file. But I always get the answers with the form like this [2.167347704427648e+03 + 0.000000000000000e+00i, 2.415785715277585e+03 + 0.000000000000000e+00i]. As I already check about the parameters, they shouldn't produce complex numbers. But why instead the answers containing imaginary part*0?

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回答（1 个）

Image Analyst
Image Analyst 2013-5-17
What are the values of all the variables? You forgot to tell us. Also, why is there a ... after the semicolon that terminates line #1? This makes the next line not considered when calculating pf - don't know if you want it to be or not.

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