Math 4281

Homework 4

Due Wednesday, February 16, 2011

The problem set is due at the beginning of the class on Wednesday.

Section 1.3:    Exercises 1-3

Section 1.4:    Exercises 2, 3, 8

In homework Exercise 1.4.2, you do not need to complute all the 36 products to verify that matrix multiplication corresponds to multiplication of symmetries. Just check that for RA, you get symmetry c, for R2A, you get symmetry b, and for AR, you get again symmetry b.