Answer:
a. 1, 3, 9, 27, 81
b. 1, -1, -3, -5, -7
c. 1, 2, 5, 10, 17
d. 1, 3, 7, 13, 21
Explanation:
a.
a(1) = 1
a(2) = 3 × a(1) = 3 × 1 = 3
a(3) = 3 × a(2) = 3 × 3 = 9
a(4) = 27
a(5) = 81
Answer: 1, 3, 9, 27, 81
b.
b(1) = 1
b(2) = -2 + b(1) = -2 + 1 = -1
b(3) = -2 + b(2) = -2 + (-1) = -3
b(4) = -5
b(5) = -7
Answer: 1, -1, -3, -5, -7
c.
c(1) = 1
c(2) = (c(1))² + 1 = 1² + 1 = 2
c(3) = (c(2))² + 1 = 2² + 1 = 5
c(4) = 9 + 1 = 10
c(5) = 16 + 1 = 17
Answer: 1, 2, 5, 10, 17
d.
d(1) = 1
d(2) = d(1) + 2(2) - 2 = 1 + 4 - 2 = 3
d(3) = d(2) + 2(3) - 2 = 3 + 6 - 2 = 7
d(4) = d(3) + 2(4) - 2 = 7 + 8 - 2 = 13
d(5) = d(4) + 2(5) - 2 = 13 + 10 - 2 = 21
Answer: 1, 3, 7, 13, 21