I have to create a matrix using only zeros, ones and eye

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N/A
N/A 2019-1-21
评论： Kevin Phung 2019-1-21
This is the matrix:
1 1 1 1 1
0 1 0 0 0
0 0 1 0 0
0 0 0 1 0
0 0 0 0 1
so far I wrote B=ones(1,5); C=eye(4,5); A=[B;C]
But this command didn't come out right. Can someone please help me.

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采纳的回答

Kevin Phung
Kevin Phung 2019-1-21
编辑：Kevin Phung 2019-1-21
your command A = [B;C] concatenated them vertically.
Try:
C = eye(5)
C(1,:) = 1; % turns every element along the first row to 1.
  2 个评论
Stephen23
Stephen23 2019-1-21
编辑：Stephen23 2019-1-21
>> C = eye(5);
>> C(1,:) = 1
C =
1 1 1 1 1
0 1 0 0 0
0 0 1 0 0
0 0 0 1 0
0 0 0 0 1
Kevin Phung
Kevin Phung 2019-1-21
I would like to clarify that I made the exact same changes right before I saw your comment!
Originally I had something like
C(1,:) = B;

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更多回答（1 个）

Rob Purser
Rob Purser 2019-1-21
A = eye(5);
A(1,:) = ones(1,5);

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