Your work on these problems will be collected in class on Monday, March 19.

§4.3: #'s 5; 6; 7; 9; 12; 13; 15; 19; 20; 21.

§4.4: #'s 1; 2; 4; 5; 6; 7; 9.

Note: The above section numbers refer to our textbook: Linear Algebra with Applications, by Otto Bretscher, Prentice Hall; 1997.