Question

Maybe I should rewrite my post: can someone pretty please write the first couple of terms for summation(2,i=-1..4)

Answer 1

\[\sum_{i=-1}^{4}2\]

Answer 2

i believe in you cyter :)

Answer 3

2+2+2+2+2+2=12

Answer 4

why is it that though?

Answer 5

-1,0,1,2,3,4, are 6 items

Answer 6

i might be losing my brain lol or something but why does that tell us to do 2(6)

Answer 7

i think of it this way
sum of 2(i)^0 from i=-1 to 4
= 2(-1)^0+ 2(0)^0+2(1)^0+2(2)^0+2(3)^0+2(4)^0 = 12
if you know something about arithmetic series it should help

Answer 8

i know but that 0^0 is confusing me
because it is undefined

Answer 9

0^0 is indeterminate
this is tricky here

Answer 10

i have always thought of it just like you said but I never thought about the 0^0

Answer 11

okay, scratch my method,
and check this out
http://betterexplained.com/articles/techniques-for-adding-the-numbers-1-to-100/

Answer 12

i don't know if this helps

Answer 13

I do thank you though for trying to help me i will give you a medal

Answer 14

does that help?
We are taking the sum of the y values for f[n]=n.
at f[-1]+f[0]+...+f[4]
a way of visualizing functions might help

Answer 15

but we have f(n)=2
omg omg
ok so we f(-1)+f(0)+f(1)+...
=2+2+2+
omg you are my hero

Answer 16

i never thought of visualing it as a function

Answer 17

lol, good. Was just about to suggest the f(n) = 2 thing =)
Glad you hit upon it.

Answer 18

:)

Answer 19

cyter eveytime i notice you post something i'm gonna give you a medal

Answer 20

i just went back through some old posts and probably gave you like 6 medals lol

Answer 21

Thanks :)

Answer 22

like seriously cyter you are my hero

Answer 23

Lets hope I save more...
onto infinity!

Answer 24

11 medals are enough

Answer 25

i know alot of math. I didn't think anyone could really impress me on this site or save me.

Answer 26

one was probably enough

Answer 27

but its ok

Answer 28

i mean i exaggerate when i say save lol

Answer 29

I did exaggerate too

Answer 30

i have a masters in math but there are small things i just accepted rules on

Answer 31

its nice to understand

Answer 32

This is the best thing I like about collaborative learning
You get to learn and really reach levels of understanding you couldn't reach

Answer 33

Polpak is pretty smart and impressive but no one has ever rescued me like you lol

Answer 34

i'm sorry but i'm going to medal stalk you

Answer 35

I appreciate it but I'm really interested in understanding concepts in different ways/dimensions thanks to people kind enough to enlighten everyone.

Answer 36

I've also learned quite a bit from your answers

Answer 37

lol well it is the only i can do probably to show thanks

Answer 38

Your word is enough.

Answer 39

have your really learned from my answers

Answer 40

questions you asked?

Answer 41

yes

Answer 42

I'm not sure

Answer 43

what level of math are you?

Answer 44

Calc 1

Answer 45

my power had gone out so sorry about the delay

Answer 46

omg seriously wow cal 1 omg you are a genius already

Answer 47

nah

Answer 48

what math class r u?

Answer 49

i have my masters in math lol

Answer 50

u r the genius

Answer 51

no! i couldn't explain that summation thing up there lol

Answer 52

i mean now i can

Answer 53

gn