Question

Summation notation question

Answer 1

-1 + 2 + 5 + 8 + ... + 44 assuming this continues

Answer 2

hmm shouldn't it be 1+2+3
not -1+2+3
you sure that negative sign is there

Answer 3

Positive

Answer 4

er yes

Answer 5

it is negative in the problem, might be a typo

Answer 6

oh no it is good actually lol

Answer 7

that's and arithmetic series
with common different 3
there is a formula for the n summation

Answer 8

check your notes lol

Answer 9

So like -1 + 3n

Answer 10

infinity
sigma
n=0

Answer 11

no the general term is like this
\[a_n=a_1+(n-1)d=-1+3(n-1)\]

Answer 12

That doesn't simplify to the answer choices

Answer 13

so it would be \[\sum _{1}^{\infty}-1+3(n-1) \]

Answer 14

Um

Answer 15

what are you given?

Answer 16

-3n and -1+3n

Answer 17

hmm -1+3n is good if we star with zero
but my summation is also good :) making myself feel good hahah

Answer 18

It looks right

Answer 19

:)

Answer 20

basically what we are doing is \[\rm \Large \sum a_n\]

Answer 21

Alright