indexing into a matrix

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mohamed essabir
mohamed essabir 2020-2-16
评论： mohamed essabir 2020-2-16
hello,
i have here a matrix called A, which is equal :
1 8 2
5 4 8
4 4 1
A = 5 1 0
4 8 7
4 4 4
4 4 1
my goal is to extract the 1st 3rd and second to last (6th) rows.
how can do it?

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Sindar
Sindar 2020-2-16
编辑：Sindar 2020-2-16
A([1 3 end-1],:)
I highly recommend this explanation of indexing: https://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html

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