Question

Write an explicit definition for the sequence -1, 3, 5, 9

Answer 1

Wait, i said it wrong! -3, 1, 5, 9

Answer 2

n+4

Answer 3

that's your clue
when creating a summation formula, your initial value is -3

Answer 4

second option?

Answer 5

@nincompoop @goformit100

Answer 6

i dont know the screenshot is all i have

Answer 7

\[\large \color{blue}{-3,~~1, ~~5,~~9,...}\]

see any pattern ?

Answer 8

there's a technique you can follow for any arithmetic sequence

read this page
http://www.mathsisfun.com/algebra/sequences-sums-arithmetic.html

Answer 9

looking for the common difference is the key

Answer 10

This is an arithmetic sequence because there is a common `difference` amongst all terms in the sequence.

d = 4.

Answer 11

telling you what the answer is does not in any way help you understand the concept and apply it on your own

Answer 12

A geometric sequence, on the other hand, is comprised of ratios, or `r values`