Question

The following function defines a recursive sequence.

f(0) = -3

f(1) = 6

f(n) = -2•f(n -1) - f(n - 2); for n > 1

Which of the following sequences is defined by this recursive function?

-3, 6, -9, -12, …

-3, 20, -95, 480, …

-3, 6, -9, 12, …

-3, -20, -95, -480, …

Answer 1

i will medal the most helpful person

Answer 2

anyone?

Answer 3

i need help

Answer 4

I see

Answer 5

Have you attempted to find f(2)?

Answer 6

f(2)=15?

Answer 7

@Hero f(2)=15?

Answer 8

f(2) = -2•f(2 -1) - f(2 - 2); for n > 1
f(2) = -2f(1) - f(0)

Hint: f(1) and f(0) are given.

Answer 9

2nd Hint:
f(2) = -2(6) - (-3)
= -12 + 3
= -9

Answer 10

so f(2)=-9?

Answer 11

Correct

Answer 12

ok

Answer 13

that narrows it down to 2 answers

Answer 14

That narrows down the answer choices.

Answer 15

Beat me to it.

Answer 16

the first one and the third one
lol

Answer 17

Actually, it narrows it down to one choice if you notice the pattern.

Answer 18

oh yea

Answer 19

the third one

Answer 20

Correct

Answer 21

thanks