write this following matrix

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Zeynep Toprak 2020-5-7

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https://ww2.mathworks.cn/matlabcentral/answers/523874-write-this-following-matrix

评论： Gokberk Yildirim 2020-5-16

采纳的回答： John D'Errico

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How can I write the following matrix

I define n=100

And I generate the following code

D= toeplitz ([0 1 zeros(1, n-2) -1]/ (2*h))

but I get wrong matrix. How can I correct it?

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Zeynep Toprak 2020-5-7

okay, thanks for helping, but it is very difficult. Thanks a lot again.

Gokberk Yildirim 2020-5-16

Actually, it can be done with this Zeynep.

c = [0 -1 zeros(1,n-3)];

r = [0 1 zeros(1,n-3)];

D = toeplitz(c,r) / (2*h)

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采纳的回答

John D'Errico 2020-5-7

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编辑：John D'Errico 2020-5-7

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Try this:

n = 100;
D = (diag(ones(n-1,1),1) - diag(ones(n-1,1),-1))/(2*h);

You can also use spdiags. or sparse, or many other tools. But diag as I did it above is about the simplest way.

Many thanks for your great help!! :) I use this matrix in this question my question is here. But I get an error message. Please can you take a look at it? (This is not assignment or something else like this. On these lockdown days, I try to learn matlab by myself, and I have no one to ask or to learn) Many thanks again.

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