Linear combinations

A_1 = ( 1 2 3 ) 4 5 6&# ... 1 1 1 - - - 2 3 4

2A_1 - .25 A_2 = ( 1.5 3.0 1.28761 ) 7.875 9.91667 37.6366

Created by Paul Blanchard using Mathematica  (October 21, 2005)