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How can I create a matlab matrix below?

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kimjandi
kimjandi il 3 Mar 2021
Risposto: Walter Roberson il 3 Mar 2021
Hi, I've been wanting to construct a matlab matrix that is n by n. and looks like this. I've beeen trying to use diag but the function diag doesn't provide this. so m a bit confused. Please help!

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Walter Roberson
Walter Roberson il 3 Mar 2021
Ran in:
N = 6;
diag(-2*ones(1,N)) + diag(ones(1,N-1),-1) + diag(ones(1,N-1),1)
ans = 6×6
-2 1 0 0 0 0 1 -2 1 0 0 0 0 1 -2 1 0 0 0 0 1 -2 1 0 0 0 0 1 -2 1 0 0 0 0 1 -2

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