If a general statement like an->a where (an) is a sequence of non negative real numbers, how would we prove the sqare root an->the square root of a.(adsbygoogle = window.adsbygoogle || []).push({});

When a=0, this can easily be done. But I don't see how this is possible from the given information for the case where a>0. Thanks for any help or suggestions.

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# Proving limits for converging sequences

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