1. The explicit formula an = 2-5 (n-1) represents an arithmetic sequence. Write the recursive formula for the sequence.
Lesson 4: Formulas for Arithmetic Sequences
1. d
2. a,f
3. b
star four! is 100% CORRECT
Star four! is still correct as of 2020 :)
Star four is still correct as of today.
1.D
2.A.F
3.B
since 5(n-1) subtracts 5 when n increases by 1,
a_n = a_(n-1) - 5
now, what is a_1 ?
star four still correct 10/15/21
still correct 10/19/2021
d, af, b is still correct
yep its right
Star four! is still correct in 2022.
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.