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|dw:1363357894822:dw|
Is this correct?

wait, n has to start from 1 and not 0

The only choices are n=0

we shud notice that 1 is chanhing sign|dw:1363365221629:dw|

can you rewrite the series, I think you have not written it correctly

no that is what it says. I copied and pasted the question.

so the first two terms are positive?

No the first two terms are 1 and -3. Would this be better?|dw:1363358185671:dw|

yes thats better

Okay I was not so sure. Thank you!

thats not correct

the first term will be 0, lol!

No it won't...

not necessarily if you look at the summation question I asked before this.

the series you gave had the first term 3

anything to the power of 0 is 1!

and the first term was -4

yeah I wrote it in that way

there are more ways to write it

I hope you see it.

It depends on if it is finite or infinite

for example I could have written
\[\sum_{n=1}^{15}9(n-1)-4\]

and that works too!!!!!!!!