A=matrix([[2,3,4],[5,6,7],[8,9,1]])
B=matrix([[4,5,6],[1,3,4],[6,5,9]])
C=matrix([[5,7,2],[5,1,9],[8,3,7]])
I=matrix([[1,0,0],[0,1,0],[0,0,1]])
Q=I*A
print Q
Z=bool(Q==A)
print Z
w=(A*B)*C
e=A*(B*C)
print w
print e
L=bool(w==e)
print L
r=A*(B+C)
t=(A*B)+(A*C)
print r
print t
V=bool(r==t)
print V
Y=A*B
U=B*A
print U
print Y
bool(U==Y)

Strang-1.4-3 (last edited 2010-12-18 07:18:09 by sai kumar)