This is the equation that i have ended up with
I am using the Ratio test ....if ....
= .........I am stuck here what should i do next?????
Your constants are off and you need a ().
Then let n go to infinity and the limit will be
set that less than 1 and you will see that in the interval of convergence is (-1,1).
THEN test the endpoint and since the series will converge at both endpoints, the interval of convergence is [-1,1].
PLUS you should rewrite the n's as
And this is just calc 2.