Question

What are the first three terms of the sequence: a_1 = 3 and a_n = 2(_an - 1)^2?

a) 2, 8, 18

b) 3, 18, 648

c) 3, 32, 50

d) 2, 6, 12, 24

Answer 1

a{1}=3 ; a{n+1} = 2(a{n})^2

a{2} = 2(3)^2 = 18
.... its gonna be b