matrix error, long answer

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il147
il147 2021-12-2
回答： Chunru 2021-12-2
Pxx(1,1),Pxx(2,1) have right answer
but after 3, Pxx(3,1) it appear 0
I don't know why that answers are 0
I hope you can help me

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Chunru
Chunru 2021-12-2
Becasue the range of data is too big, the displayed result using the default format may make the smaller value to be 0. Run the following command first before displaying Pxx.
format longg

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