CISC 401/601 assignment 5.

Each problem is worth 10 points.

1.  Exercise 2 on page 94.
2.  Exercise 5 on page 94.
3.  Exercise 10 on page 94.
4.  CISC 401 students: exercise 2 on page 97.
    CISC 601 students: exercise 4 on page 97.
5.  Exercise 5 on page 97.