Question

can anyone help with series/sequences

Answer 1

SOMEBODY PLEASE IM DESPERATE I NEED HELP

Answer 2

what is it?

Answer 3

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

Answer 4

ap cal

Answer 5

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

Answer 6

oh with .... after it

Answer 7

hello???

Answer 8

....???

Answer 9

you need the sigma e sign first

Answer 10

oh i dont think so it just wants the rule

Answer 11

the bottom of it should be -1

Answer 12

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

Answer 13

thank you

Answer 14

no problem

Answer 15

wait elouis?

Answer 16

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

Answer 17

???????

Answer 18

my stuff wont send on chat ny ny

Answer 19

surfdude come to group chat young idily is talking bout you

Answer 20

oh

Answer 21

u tyiping?

Answer 22

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.

Answer 23

ok thanks