Create Banded Matrix in MATLAB - Step-by-Step Guide

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To create a banded matrix in MATLAB, the spdiags function is commonly used, but users may struggle to achieve the desired output. Clarification on how to determine the bandwidth, which in this case is 5, is essential for proper implementation. Detailed guidance on the specific steps taken by the user can help identify where the issues lie. It's important to ensure that the correct parameters are being passed to the spdiags function. Understanding these concepts will facilitate the successful creation of the banded matrix.
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I'm trying to make a banded matrix in MATLAB like the one in my picture.

I'm trying to use the spdiags function but I'm not going even close to getting the same matrix.

I have tried the help in Matlab but have had no luck yet.

How can you tell the bandwidth is 7?
 
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Can you explain in more details what you have tried?

And the bandwith here is 5.
 

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