Create a matrix
01-26-2019, 11:19 AM
Post: #1
 DrD Senior Member Posts: 1,132 Joined: Feb 2014
Create a matrix
Specifically, I would like to create a matrix, using a 3 element specified pattern, (tridiagonal), with a specified number of rows and columns. The center value of the pattern should be on the main diagonal of the matrix:

Some kind of variation on this (non-working) theme:
makemat([-1,2,-1], 5,5); // Uses the pattern -1,2,-1 in a 5x5 matrix, with 2 on the main diagonal:

[[2,-1,0,0,0],
[-1,2,-1,0,0],
[0,-1,2,-1,0],
[0,0,-1,2,-1],
[0,0,0,-1,2]]

I (think) this can be done using the matlab eye() command, for example. Any ideas how to create a custom matrix in similar fashion, on the prime?

-Dale-
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 Messages In This Thread Create a matrix - DrD - 01-26-2019 11:19 AM RE: Create a matrix - JMB - 01-26-2019, 12:00 PM RE: Create a matrix - DrD - 01-26-2019, 03:18 PM RE: Create a matrix - JMB - 01-26-2019, 05:49 PM

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