Question

What are the explicit equation and domain for an arithmetic sequence with a first term of 5 and a second term of 2?

Answer 1

@confluxepic

Answer 2

common difference d = 2-5 = -3

Answer 3

an = a1 + (n-1)d

Answer 4

I've tried that but it isn't any of the options none have the different at the end

Answer 5

would ti be 5-3(n-1) ?

Answer 6

it doesn't matter if d is after the parentheses or before

an = a1 = d(n-1) is the same

Answer 7

yes correct

Answer 8

* a1 +

Answer 9

OK?

Answer 10

so then the domain would be all greater than or equal to 1 correct?

Answer 11

n= 1, 2,3....

Yes

Answer 12

n>= 1
or in interval notation its [1, +Infinity)

Answer 13

can you help with another?