Asked by Nunyo

1. The explicit formula an = 2-5 (n-1) represents an arithmetic sequence. Write the recursive formula for the sequence.
Answered by Reiny
You should have done this:

So what are the terms of your sequence?
2, -3, -8, ....
What do I notice about the terms?
Each term is 5 less than its previous term. Well, there it is!
a(n) = a(n-1) - 5 , for n > 1 , and a(1) = 2

The definition for the initial term is essential.
Answered by Steve
since 5(n-1) subtracts 5 when n increases by 1,
a_n = a_(n-1) - 5
now, what is a_1 ?
Answered by Star four!
Lesson 4: Formulas for Arithmetic Sequences
1. d
2. a,f
3. b
Answered by Ciel phantomhive
star four! is 100% CORRECT
Answered by Hi
Star four! is still correct as of 2020 :)
Answered by Need Help
Star four is still correct as of today.
1.D
2.A.F
3.B
Answered by girl in red
yep its right
Answered by balls
star four still correct 10/15/21
Answered by hi
still correct 10/19/2021
Answered by yeah
d, af, b is still correct
Answered by N
Star four! is still correct in 2022.
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