can anyone help with series/sequences

- anonymous

can anyone help with series/sequences

- schrodinger

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- anonymous

SOMEBODY PLEASE IM DESPERATE I NEED HELP

- anonymous

what is it?

- anonymous

alg 2 sequences can u help? what math/grade r u

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## More answers

- anonymous

ap cal

- anonymous

oh wow. can u do something like this?
write the rule for each sequence. -1, 2, 7, 14, 23

- anonymous

oh with .... after it

- anonymous

hello???

- anonymous

....???

- anonymous

you need the sigma e sign first

- anonymous

oh i dont think so it just wants the rule

- anonymous

the bottom of it should be -1

- anonymous

the first term is -1,
first term = square one and subtract 2. (1)^2 -2 = -1
second term is 2
second term = square two and subtract 2. (2)^2 -2 = 2
third term is 7
third term = square three and subtract 2. (3)^2 - 2= 7
so it seems like (number of term)^2 -2

- anonymous

thank you

- anonymous

no problem

- anonymous

wait elouis?

- anonymous

how did you know to do that though? did u just guess or something

- anonymous

???????

- anonymous

my stuff wont send on chat ny ny

- NY,NY

surfdude come to group chat young idily is talking bout you

- NY,NY

oh

- anonymous

u tyiping?

- anonymous

yeah you look at the difference, and difference of the difference
for your example -1,2,7,14,23
the difference between first and second term is 3
and second third is 4
and third fourth is 7
and fourth and fifth is 9
it doesn't look linear, meaning not increasing by a multiple. so you guess a geometric progression next, meaning a square or cube.

- anonymous

ok thanks

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