Question

A recursive function is shown below:

f(1) = 4 and f(n) = f(n - 1) - 8; n > 1

Which of the following lists the terms in the sequence defined by this recursive function?

a. 4, -4, -12, -20, -28, ...
b. 4, 4, 12, 20, 28, ...
c. 4, 12, 20, 28, 36, ...
d. 4, -12, -20, -28, -36, ...

Answer 1

did you try to plug in

Answer 2

1 w4snt sur3 wh3r3 to plug th3m 1n.

Answer 3

f(1) = 4
then
f(2) = f(2-1) - 8 = f(1) - 8 , now substitute

Answer 4

f(2)= -4 ?

Answer 5

correct

Answer 6

now use f(2) to find f(3)

Answer 7

th4nks!

Answer 8

f(3) = f(2) - 8

Answer 9

-12