I am having difficulty in evaluating the limit(adsbygoogle = window.adsbygoogle || []).push({});

x tends to positive infinity (log( (1+[sqrt(2)/2])^x + (1-[sqrt(2)/2])^x ))/x

I have tried using binomial series expansion but turn out to be something messy.

Any ideas on it?

:)

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# Evaluation of limit

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