Question

What are the first three terms of the sequence: a1 = 4 and an = 2(an1)2


8, 16, 32

4, 16, 32

8, 64, 128

4, 32, 2048

Answer 1

\[a_1=4\\

a_2=2\times a_1^2=2\times 4^2=2\times 16=36\]

Answer 2

oops i meant \(32\) doh