rref - Compute reduced row echelon form of matrix
Syntax
rref(A)
Description
rref(A) computes the reduced row echelon
form of the symbolic matrix A. If the elements
of a matrix contain free symbolic variables, rref regards
the matrix as nonzero.
Examples
Compute the reduced row echelon form of the magic square matrix:
rref(sym(magic(4)))
The result is:
ans =
[ 1, 0, 0, 1]
[ 0, 1, 0, 3]
[ 0, 0, 1, -3]
[ 0, 0, 0, 0]
Compute the reduced row echelon form of the following symbolic
matrix:
syms a b c;
A = [a b c; b c a; a + b, b + c, c + a];
rref(A)
The result is:
ans =
[ 1, 0, -(a*b - c^2)/(a*c - b^2)]
[ 0, 1, -(b*c - a^2)/(a*c - b^2)]
[ 0, 0, 0]
See Also
eig | jordan | rank | size
 | round (sym) | | rsums (sym) |  |
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