rowAdd -- add a multiple of one row to another

Synopsis

• Usage:

  rowAdd(m,i,a,j)

• Inputs:
  • m, a mutable matrix
  • i, an integer
  • a, a ring element, in the same ring as m
  • j, an integer
• Consequences:

  • The i th row of m is modified by adding a times the j th row of m

Description

i1 : R = ZZ[a..f];

i2 : m = mutableMatrix genericMatrix(R,a,2,3)

o2 = | a c e |
     | b d f |

o2 : MutableMatrix

i3 : rowAdd(m,0,c,1)

o3 = | bc+a cd+c cf+e |
     | b    d    f    |

o3 : MutableMatrix

i4 : m

o4 = | bc+a cd+c cf+e |
     | b    d    f    |

o4 : MutableMatrix

See also

• mutable matrices
• row and column operations