Question

Find a formula for the general term a_n of the sequence:

{-3, 2, -4/3, 8/9, -16/27}

I would like a hint please.

Answer 1

first put them all in fraction form, do you notice any pattern?

Answer 2

i mean for -3 and 2 :s

Answer 3

is there sth. wrong with the last one? 16/27 i guess that's supposed to be negetive

Answer 4

yea i think so

Answer 5

yea~ then it can be solved~ something times (-3) equals 2~ @nphuongsun93 's hint it right~

Answer 6

{-3, 2, -4/3, 8/9, -16/27} was what I meant.

Answer 7

@JamesJ
@satellite73
@TuringTest
@dpaInc
@Hero
@experimentX
@eliassaab
@ParthKohli

Answer 8

each term is multiplied by
-2/3

Answer 9

so it's a geometric series ... with first term -3 and common ratio -2/3
rest you know.

Answer 10

WOW.