Question

A sequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. If f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence?

f(1) = 2 and f(n) = f(n - 1) + 4; n > 1

f(1) = 4 and f(n) = f(n - 1) + 2n; n > 1

f(1) = 2 and f(n) = f(n - 1) + 4n; n > 1

f(1) = 4 and f(n) = f(n - 1) + 2; n > 1

Answer 1

@Miss.SweetiePie , @paki , @welshfella

Answer 2

okay so we know f(x)=4 (thats the term we're looking for)
f(x)=f(n-1)+2 (because you are adding 2 to the nth term) ;n>1

Answer 3

Okay, well I got the answer D

Answer 4

thats what I got

Answer 5

Yeah, what do you think @welshfella

Answer 6

D is correct

Answer 7

Thanks guys!

Answer 8

yw

Answer 9

no problem :)