Find all the values of such that the given series would converge. ∞ ∑ [(−1)^n*x^n] / [5^n*(n^2+8)] n=1 I need this in interval notation, please help!
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Originally Posted by Del Find all the values of such that the given series would converge. ∞ ∑ [(−1)^n*x^n] / [5^n*(n^2+8)] n=1 I need this in interval notation, please help! Where are you stuck? What have you tried?
I don't even know where to start.
Originally Posted by Del I don't even know where to start. apply the ratio test, or the root test, if you can handle it. then solve for what x needs to be can you continue?
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