the power series CnX^n diverges at x=7 and converges at x=-3. At x=-9, the series is?

(a) conditionally convergent
(b) absolutely convergent
(c) divergent
(d) cannot be determined

Question

the power series CnX^n diverges at x=7 and converges at x=-3. At x=-9, the series is?

(a) conditionally convergent
(b) absolutely convergent
(c) divergent
(d) cannot be determined

megannicole51 · Answer

@agent0smith

anonymous · Answer

A I think.

megannicole51 · Answer

its divergent btw

anonymous · Answer

Oh, sorry my mistake.

megannicole51 · Answer

no its okay i just need to learn how to do these.....i hate finals.

anonymous · Answer

Ah, what grade?

megannicole51 · Answer

college

megannicole51 · Answer

im a junior

anonymous · Answer

Oh, I did not know that was collage question. LOL! It woulda been funny if I guessed it. What you going for?

megannicole51 · Answer

im a math major right now but I'm switching into business. the university of colorado math department has literally made me hate math that bad (ive wanted to be a math major since middle school)

anonymous · Answer

Dang, I have family all around there.  One has a buisiness, not a buisinuss degree though lol.

anonymous · Answer

LOL i also used to be a math major. I was a senior before I switch to mechanical engineer

megannicole51 · Answer

yeah its beautiful and a great school but i pay too much money to go to this school than be taught by a bunch of idiots

anonymous · Answer

$10,000 / year at my university :/ what a rip off

anonymous · Answer

Yeah. I know how it is lol. Not even in collage. But if they don't know what there doing. Then why bother paying them?

megannicole51 · Answer

wow! congrats on becoming an engineer though....way more BA

megannicole51 · Answer

exactly

megannicole51 · Answer

yo then do u know how to do this problem? im trying to study for my final on monday

anonymous · Answer

I'm a teaching assistant and I feel bad for those students lol

anonymous · Answer

When I go, I am going for Game Design, then PHP, C++, HTML, HTML 4 & 5, then CSS. All I want to learn for awhile.

megannicole51 · Answer

Awesomeee

anonymous · Answer

I don't get why it is convergent when x = -3. By the geometric series test, it should be divergent because abs(-3) > 1. are you sure you copied it rignt?

megannicole51 · Answer

it is divergent

megannicole51 · Answer

i need someone to work through every step with me please so i know how to do it for the exam

anonymous · Answer

ahh.. after 10 minutes of intense thinking I know why it's divergent :)  Gosh why am I so smart :D