A=matrix([[4,2],[1,3]])
print det(A)
print det(A**(-1))
Y=var('y')
k=matrix([[4-y,2],[1,3-y]])
print det(k)
print solve(det(k)==0,y)

Strang-4.2 13-U (last edited 2010-12-18 10:58:54 by shwetaradha)