Interchange two rows of a matrix

This elementary row operation corresponds to interchanging two equations.

Usage

rowswap(x, from, to)

Arguments

x

a matrix, possibly consisting of the coefficient matrix, A, joined with a vector of constants, b.

from

source row.

to

destination row

Value

the matrix x, with rows from and to interchanged

See also

echelon, gaussianElimination

Other elementary row operations: rowadd(), rowmult()