Question

What is an explicit rule for this sequence?

http://prntscr.com/dl2a5f

Answer 1

What do you think?

Answer 2

I don't know.

Answer 3

a_1 = 3
a_2 = 3/2
a_3 = (a_2)/2 = (3/2)/2 = 3/4
a_4 = (a_3)/2 = (3/4)/2 = 3/8
.....
a_n = (a_(n-1))/2 = 3/2^(n-1)

hope this helped

Answer 4

@3mar do you agree this above wrote ? ty.

Answer 5

I think you represent it well