write this following matrix
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How can I write the following matrix
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/291292/image.png)
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?
6 个评论
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)
采纳的回答
John D'Errico
2020-5-7
编辑:John D'Errico
2020-5-7
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.
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