var('a,b,c,d')
A=matrix([[a,b],[0,d]])
print A
B=A.det()
print B
var('a,b,c,d')
C=matrix([[a,0],[c,d]])
print C
F=C.det()
print F

Strang-4.2-7 (last edited 2010-12-18 11:29:13 by prakasam team)