Question

Negative 2 and two-thirds, negative 5 and one-third, negative 10 and two-thirds, negative 21 and one-third, negative 42 and two-thirds, ellipsis Which formula can be used to describe the sequence? f(x + 1) = –2f(x) f(x + 1) = Negative one-halff(x) f(x + 1) = One-halff(x) f(x + 1) = 2f(x)

Answer 1

Answer: its D my friend

Explanation:

Answer 2

(D) f(x+1)=2f(x)

Explanation:

The sequence is:

`-2(2)/(3), -5(1)/(3), -10(2)/(3), -21(1)/(3), -42(2)/(3)`

Now,

`-5(1)/(3) / -2(2)/(3)=2\\-10(2)/(3) / -5(1)/(3) =2`

On continuous calculation, we would discover that the next term is gotten from the preceding term by multiplying it by 2.

Therefore for term f(x), the next term f(x+1) is:

f(x+1)=2f(x)