Question

help?

Answer 1

@jhonyy9

Answer 2

the first term ?

Answer 3

Yes because n=1 correct?

Answer 4

for n=1 from parantheses result 1

Answer 5

Wait whoa.. can I see this in work form?

Answer 6

so than the first term will be -4(-1/2)^(1-1) = -4 *1 = -4

Answer 7

So what does the infinity sign mean over the sigma?

Answer 8

yes ?

Answer 9

this mean that the series begin with n=1 and goes till n=infinite

Answer 10

Ohh okay thanks bud! So I got 4 is that correct?!

Answer 11

4 for what result

Answer 12

for this problem.

Answer 13

how you get this ? can you rewrit here ?

Answer 14

yes. One moment please.

Answer 15

just bc. this is sum of this series so this mean n_1 +n_2 +n_3 +n_4 + ...+n_infinite

Answer 16

Mmm miscalculation. I got 3.

Answer 17

i dont understand it - sorry

n_1 = -4
n_2 = ?
n_3 = ?

Answer 18

for n=2 how many will get ?

Answer 19

I thought I only have to find... n=1?

Answer 20

but there is wrote that you ned find the seum of this series not just the first term

Answer 21

need find

Answer 22

Okay one second I'm on it!!!

Answer 23

n_1=-4
n_2=2
n_3=-1
n_4=1/2

Answer 24

1. -4
2. 2
3 -1

Answer 25

I think I see a pattern. No worries I go it!

Answer 26

really ?

Answer 27

for 5 = ?

Answer 28

I think you would multiply n by itself to get the answer.

Answer 29

5=-1/4

Answer 30

everything is going down by halves.

Answer 31

yes but attention please bc. there are one negativ and one positive and so ...

Answer 32

so and this what will result when you wan assume these terms ? do you see it now ?

Answer 33

-4+2-1+1/2 -1/4 ...= ?

Answer 34

-2 (3/4) @jhonyy9

Answer 35

-4+2-1=-3
-3 +1/2 -1/4 = -3 +1/4 = -11/4
but you need continue it till n= infinite bc. this is the sum of this terms

Answer 36

okay thanks.

Answer 37

@haleyelizabeth2017 can you explain this.. I dont know how to get to infinity or whatever he's talking about...