# i got this matrix question on my exam and i really had hard time with it

조회 수: 2(최근 30일)
Marzouq harbi 2021년 6월 2일
댓글: Rik 2021년 6월 4일 can any one explain the sulotion of it please ? thank you.
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Rik 2021년 6월 2일
What did you try? Did you read the documentation for each of those functions?
The solution is to divide the matrix in sections that can be created with only those three functions.

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### 채택된 답변

Kunal Kandhari 2021년 6월 2일
This can be done using following line of code:
A = [zeros(2,3) ones(2,2); eye(5)]
Explaination:
zeros(2,3) will create array of zeros with 2 row and 3 column
ones(2,2) will create array of ones with 2 row and 2 column
eye(5) will create identity matrix of dimension 5
[zeros(2,3) ones(2,2)] will append ones after zero therefore resulting in
following matrix:
0 0 0 1 1
0 0 0 1 1
Now we want to append identity matrix below above obtained matrix
therefore we use semicolon after zeros and ones array and identity
matrix will be appended vertically
-----------------------------------------------------------------------------------------
You can refer following links for better understanding:
for creating array of zeros:
for creating array of ones:
for creating identity matrix:
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Rik 2021년 6월 4일
So you did see that comment but not my first one? I'm sorry, but a few years here have made me a bit sceptic/cynical.

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