Math 145, Fall 2005

Chapter 8, new #2

Guess a formula for the n-th term of the sequence {a1, a2, a3, ... } whose first few terms are given.

(a) 11, 12, 13, 14, 15, 16, ...

(b) 1, 1/2, 1/4, 1/8, 1/16, 1/32, ...

(c) 6, 3, 0, -3, -6, -9, -12, ...

(d) 1, -2, 3, -4, 5, -6, 7, ...

(e) 1, 2, 6, 24, 120, 720, 5040, ...