write this following matrix

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?

[Sindar]

try diag (good for small problems) or spdiag (better examples)

[Zeynep Toprak]

please can you write in a clear way. I am new learner of matlab, and I try to learn it by myself. So, I do not know how to use what you said. Thanks a lot.

[Sindar]

click the links and read the examples

[Sindar]

Also, try this general tutorial: https://www.mathworks.com/learn/tutorials/matlab-onramp.html

I'd been using Matlab for years and still found it useful

[Zeynep Toprak]

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

[Gokberk Yildirim]

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)

Answer 1

[John D'Errico]

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.

[Zeynep Toprak]

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.