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

@iambatman

Answer 2

Well which one can we eliminate right away.
"A sequence has its first term equal to 4"

Answer 3

a?

Answer 4

Yes a, and?

Answer 5

c?

Answer 6

Nicely done

Answer 7

So now we just have b and d :) making our life easier

Answer 8

lol yup :)

Answer 9

Now look here, "and each term of the sequence is obtained by adding 2 to the previous term."

Answer 10

f(n-1) + ?n is what it's saying, what's the question mark

Answer 11

what you are asking me ?

Answer 12

I'm asking you to read the question, and tell me what it's saying

Answer 13

"and each term of the sequence is obtained by adding 2 to the previous term."

Answer 14

We know that f(n) represents the nth term

Answer 15

ok i beleve it is b?

Answer 16

Yes :)!

Answer 17

thank you :)