Grant Bonner
New member
- Joined
- Aug 27, 2009
- Messages
- 13
If {a_n} converges to a with a_n>=0 for all n, show {sqrt(a_n)} converges to sqrt(a).
If a>0, then sqrt(a_n) - sqrt(a) = (a_n - a)/(sqrt(a_n) + sqrt(a)) <= a_n - a < e. Is that correct?
If a>0, then sqrt(a_n) - sqrt(a) = (a_n - a)/(sqrt(a_n) + sqrt(a)) <= a_n - a < e. Is that correct?