how to i get everything in a matrix except the first row and the first column in matlab

To retrieve all the elements in a matrix except for the first row and first column, you can use the : operator to retrieve all the rows after the first row and all the columns after the first column. Here is an example code:

main.m
% create an example matrix A
A = magic(5);
disp('Matrix A:')
disp(A)

% retrieve all elements in A except the first row and first column
output = A(2:end, 2:end);
disp('Matrix without the first row and first column:')
disp(output)
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In the code above, we first create an example matrix A using the magic() function. We then use indexing to retrieve all elements in A except the first row and first column. The 2:end notation retrieves all the rows and columns starting from the second row and column. The output would be:

main.m
Matrix A:
17 24  1  8 15
23  5  7 14 16
 4  6 13 20 22
10 12 19 21  3
11 18 25  2  9

Matrix without the first row and first column:
 5  7 14 16
 6 13 20 22
12 19 21  3
18 25  2  9
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