Science talk:Math Exam Resources/Courses/MATH221/April 2013/Question 07 (a)

G = AffineGroup(2, QQ)

A = G.reflection([3,-4])

B = A.matrix()

for i in B.eigenvectors_left(): print i

You need to be careful when reading this code, as A is considered as an affine transformation and not a linear transformations.