Question

Identify the type of sequence shown in the table below and select the appropriate response.


n f(n)
1 48
2 −96
3 192
4 −384
5 768


Arithmetic sequence; common difference is 96
Arithmetic sequence; common difference is −144
Geometric sequence; common ratio is 3
Geometric sequence; common ratio is −2

Answer 1

so, to get from \(a_1 \rightarrow a_2\) what do you do? do you do the same thing in going from \(a_2 \rightarrow a_3\) ? if so, then you have founf the common difference or the common ratio.

Answer 2

"found" not "founf"

Answer 3

remember, the only 2 operations you have to consider are addition and multiplication.

Hint: the sequence alternates in sign... can you get that by always adding a constant?

Answer 4

sorry for the late reply.. thanks

Answer 5

@pgpilot326 so yes its D? as said above

Answer 6

@Pawanyadav please don't just give answers... the idea is for the student to learn!

Answer 7

Please refer to the Code of Conduct. (below and to the left, under the posted questions section).

Thanks!

Answer 8

@pgpilot326 erm not exactly.. I was understanding both of your explanations and I understood where he got D from

Answer 9

but i wasn't exactly sure if it was 100% correct

Answer 10

that's okay... it's better if you provide an answer and reasoning first, rather than another providing it and you agreeing with it.
i hope that makes sense.

Answer 11

also, if you are done with the question, be sure to close it.
Thanks!

Answer 12

@pgpilot326 well im still not sure of the correct answer so im going to keep it open or re-post it again.