Question

The following function defines a recursive sequence:

f(0) = -4

f(1) = 12

f(n) = -3•f(n -1) - 2•f(n - 2); for n > 1

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

Answer 1

-4, 12, -28, 60, …


-4, -12, -28, -60, …


-4, 12, -18, 54, …


-4, 12, -18, -54, …

Answer 2

I know B is ruled out.

Answer 3

work out what f(2) is

Answer 4

= -3 * f(1) - 2* f(0) = ?

Answer 5

= -36 + 8 = ?

Answer 6

28

Answer 7

no -28

Answer 8

-28

Answer 9

I know, my key did not click for some reason :P

Answer 10

so you should be able to pick out the correct choice now

Answer 11

A

Answer 12

the first 3 terms are -4 , 12 and -28

Answer 13

yes

Answer 14

I'm amazing at history but I have a tough time with Algebra -.-

Answer 15

yea we all have strengths and weaknesses

Answer 16

Well :) thank you. I gave you a medal.

Answer 17

yw

Answer 18

its funny with algebra - many people sudden;y 'see' it and it goes from tough to quite easy really quickly

Answer 19

practice as much as you can