rowx, rowm, rowa, colx, colm, cola

rowx(matrix,i,j)

:: Exchanges the i-th and j-th rows.

rowm(matrix,i,c)

:: Multiplies the i-th row by c.

rowa(matrix,i,c)

:: Appends c times the j-th row to the j-th row.

colx(matrix,i,j)

:: Exchanges the i-th and j-th columns.

colm(matrix,i,c)

:: Multiplies the i-th column by c.

cola(matrix,i,c)

:: Appends c times the j-th column to the j-th column.

return

matrix

i, j

integers

c

coefficient

• These operations are destructive for the matrix.

[0] A=newmat(3,3,[[1,2,3],[4,5,6],[7,8,9]]);
[ 1 2 3 ]
[ 4 5 6 ]
[ 7 8 9 ]
[1] rowx(A,1,2)$
[2] A;
[ 1 2 3 ]
[ 7 8 9 ]
[ 4 5 6 ]
[3] rowm(A,2,x);
[ 1 2 3 ]
[ 7 8 9 ]
[ 4*x 5*x 6*x ]
[4] rowa(A,0,1,z);
[ 7*z+1 8*z+2 9*z+3 ]
[ 7 8 9 ]
[ 4*x 5*x 6*x ]

References

section newmat, matrix

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