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lim

I can't figure this one out. I've tried everything. I tried splitting the fraction into two, applying a log to each side, factoring the top, dividing by x

_{n-->oo}(x^{2n}-1)/(x^{2n}+1)I can't figure this one out. I've tried everything. I tried splitting the fraction into two, applying a log to each side, factoring the top, dividing by x

^{2n}, and Lhopitals rule doesn't apply and wouldn't help if it did. Any ideas?
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