A=matrix([[4,0,2],[0,1,4],[0,0,5]])
Ain = A.inverse()
y1, y2,y3 = var('y1,y2,y3')
y = matrix([[y1],[y2],[y3]])
Ain*y

SageDays/Kreyszig-6.3-28 (last edited 2010-08-12 21:35:20 by bhanukiran)