Consider the following sequence: -1, 1, 3, 5, ... a. Is this an arithmetic or geometric sequence? Explain. b. Write a recurrence relation to represent this sequence. c. Use the recurrence relation from part b) to determine the 5th term.

2. Write the first five terms of each sequence. Determine whether each sequence is arith geometric, or neither. Note: a(1) = 7 means that the first term of the sequence is 7. a. a(1) = 7,a(n) = a(n – 1) – 3 for n22. This sequence is The first five terms are 7, , and b. b(1) = 2,b(n) = 2-b(n - 1) – 1 for nz2. This sequence is The first five terms are and c. c(1) = 3,c(n) = 10-c(n – 1) for n22. This sequence is The first five terms are and d. d(1) = 1,d(n) = n· d(n – 1) for n22. This sequence is The first five terms are and 1 D00 F4 F5 F10 % & * 5 6 7 8 9

Find a closed form for the infinite arithmetic sequence given by the recurrence system:  x1 = -1, xn = xn-1 - 3/2      (n = 2,3,4...)  The closed form is xn =

Find the first 10 terms of the sequence ɑn 2n + 3. its 9th term is its 10th term is