- #1
rcmango
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Homework Statement
I've tried to apply the ratio test to a problem that is a power series. here's the problem as a pic: http://img152.imageshack.us/img152/2751/35685690oj3.png
Homework Equations
The Attempt at a Solution
I've gotten so far as you can see in the pic, I've skipped all my work, but if someone can go through the problem, you'll see where I'm stuck, I'm not sure what to do with the n/(n+1) ...just use nth term test.. to get 1?
then also, |x+2|/2 ... I'm unsure if it just stays that way?
and the big problem is my (-1)^n i can't divide that through the numerator because of the n right?
there is my effort, now please just help me to achieve the end, i don't have much time.
i know the answer is 2, (4, 0]
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