Practice Problems for the Test on Thursday, Sep. 26.

from Chapter 10 review problems.

a) 16, 18, 20, 24, 28, 30, 32, 34, 44, 48, 50, 52, 54, 70, 72

b) In problem 44 also determine the orientation of the given triple of vectors. 
 
c) Is cross-product associative?
  Prove ot give a couterexample.
   Is cross-product commutative?
  Prove or give a couterexample.