Question

Find the first six terms of the sequence.

a1 = -1, an = 2 • an-1

Answer 1

@IMStuck @dumbcow @wolf1728 @nincompoop

Answer 2

Hi! Let's find the terms one at a time :) What's the first one?

Answer 3

-1

Answer 4

Good start! :) How about the second one?

Answer 5

(Do you undertstand the formula in the question, or would you like me to explain it?)

Answer 6

would it be 2?

Answer 7

Well, close. If I understood your formula correctly, each new term is twice as much as the one before.

Answer 8

So if the first term is -1, then the second one is -2.

Answer 9

okay, then -4?

Answer 10

A1=-1,\[A _{n} = 2 A _{n-1}\]
So, -1,-2,-4,-8,-16,-32

Answer 11

Excatly, well done! :)

Answer 12

Awesome! I think I was reading it wrong at first

Answer 13

Quite often, the hardest part is understanding what all the notation and formulas mean :)