Root sequence question

Hurkyl

[tex]
\lim_{n \rightarrow \infty} R_n =
\lim_{n \rightarrow \infty} \sqrt{x + \sqrt{x - \sqrt{R_{n-2}}} }
= \sqrt{ \lim_{n \rightarrow \infty}x + \sqrt{x - \sqrt{R_{n-2}}} }
= \cdots
[/tex]

Hurkyl Recognitions: Gold Member Science Advisor Staff Emeritus	Root sequence question [tex] \lim_{n \rightarrow \infty} R_n = \lim_{n \rightarrow \infty} \sqrt{x + \sqrt{x - \sqrt{R_{n-2}}} } = \sqrt{ \lim_{n \rightarrow \infty}x + \sqrt{x - \sqrt{R_{n-2}}} } = \cdots [/tex]