rref of an augmented matrix in matlab

To compute the reduced row echelon form (rref) of an augmented matrix in MATLAB, you can use the rref function. Here's an example code snippet:

main.m
% define the augmented matrix
A = [1 2 3 4; 5 6 7 8; 9 10 11 12];

% get the rref of the augmented matrix
rrefA = rref(A)

% if the matrix has multiple solutions or no solution, you can use the backslash operator to get one solution
b = [1; 2; 3];
x = A \ b
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In this example, we first define the augmented matrix A using semicolons to separate the rows and commas to separate the entries within each row. Then, we use the rref function to compute the reduced row echelon form of A and save it to the variable rrefA. Finally, we demonstrate how to use the backslash operator to solve the system of equations represented by A and b.