create a new 2 x 2 matrix c by extracting the corner values of the matrix a in matlab

To create a new 2 x 2 matrix c by extracting the corner values of matrix a in MATLAB, you can use indexing.

Here is an example code to achieve this:

main.m
% Create a sample matrix 'a'
a = [1, 2, 3; 4, 5, 6; 7, 8, 9];

% Extract the corner values
c = a([1,end],[1,end]);

% Display the result
disp(c);
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9 lines

This code creates a 3 x 3 matrix a, and then extracts the corner values using indexing. a([1,end],[1,end]) selects the first and last rows, and the first and last columns of matrix a, creating a new 2 x 2 matrix c containing the corner values.

The result will be:

main.m
1  3
7  9
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3 lines

In this example, the corner values are 1, 3, 7, and 9.