MCS 401 homework #2 Due date: 19980911 D. J. Bernstein 19980904 Exercise 5. Give a simple formula for (a) + (a + b) + (a + 2b) + ⋯ + (a + kb). Check your answer for a few values of a, b, k. Exercise 6. Baase 2.6. In this exercise “worst case” refers to the number of comparisons. You may assume that there are exactly 10 keys. Exercise 7. Baase 2.7(d). Exercise 8. Baase 1.24.