Brock2002
24.06.2019 •
Mathematics
Correct answer only ! the explicit rule for a sequence is an= 14 − 9n . what is the recursive rule for the sequence?
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Ответ:
Step-by-step explanation:
The explicit rule for an arithmetic sequence is:
The given explicit rule is:
So, we know that d = -9 and a₁ - (-9) = 14 ⇒ a₁ = 5
The recursive rule for an arithmetic sequence is:
So, the recursive rule for the given sequence is:
Ответ:
C
Step-by-step explanation:
Generate the first few terms using the explicit rule
= 14 - (9 × 1) = 14 - 9 = 5
= 14 - (9 × 2) = 14 - 18 = - 4
= 14 - (9 × 3) = 14 - 27 = - 13
= 14 - (9 × 4) = 14 - 36 = - 22
The first 4 terms in the sequence are
5, - 4, - 13, - 22
These are the terms of an arithmetic sequence with common difference d
d = - 4 - 5 = - 13 - (- 4) = - 22 - (- 13) = - 9
To obtain the next term in the sequence subtract 9 from the previous term
= - 9 with = 5
Ответ: