how to create a 4x4 matrix in matlab

You can create a 4x4 matrix in MATLAB by using the zeros or ones function, followed by specifying the size of the matrix. Here's an example of how to create a 4x4 matrix filled with zeros.

main.m
% creating a 4x4 matrix filled with zeros
A = zeros(4);
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And here's an example of how to create a 4x4 matrix filled with ones.

main.m
% creating a 4x4 matrix filled with ones
A = ones(4);
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Both of these commands will create a 4x4 matrix that looks like this:

main.m
A =

     0     0     0     0
     0     0     0     0
     0     0     0     0
     0     0     0     0
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You can also create a matrix filled with other values by simply replacing the function call with the value you want to use. For example:

main.m
% creating a 4x4 matrix filled with fives
A = 5 * ones(4);
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This will create a 4x4 matrix filled with fives:

main.m
A =

     5     5     5     5
     5     5     5     5
     5     5     5     5
     5     5     5     5
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