# Proving limits for converging sequences

1. Oct 23, 2004

### Ed Quanta

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.

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.

2. Oct 23, 2004