Question

The following function defines a recursive sequence:
f(0) = -2

f(1) = 8

f(n) = -4•f(n -1) - 3•f(n - 2); for n > 1

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

Answer 1

-2, 8, -26, -80, …
-2, 8, -26, 80, …
-2, 12, -44, 180, …
-2, -12, -44, -180, …

Answer 2

see here f(2)=-4.f(1)-3.f(0)=-4.8-3.(-2)=-32+6=-26

Answer 3

and f(3)=-4.f(2)-3.f(1)=-4.(-26)-3.8=80

Answer 4

option b is correct