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1 vote
0 answers
77 views

About $\sqrt[k]{l + \sqrt[k]{l + \sqrt[k]{l + ...}}} $ asymptotics

Consider simple nested radicals More precisely Let $$ K > 1 , 1 \leq l $$ $$X(j,K) = X_\infty(j,K)$$ $$X_0(j,K) = a(j,K)$$ $$X_n(j,K) = \sqrt[k]{j + X_{n-1}(j,K)}$$ $$Y(j,K) = \frac{j + X_{\...
mick's user avatar
  • 16.4k
2 votes
0 answers
264 views

Closed form for $\sqrt{1+\sqrt{x+\sqrt{x^2+\sqrt{x^3+\sqrt{x^4+...}}}}}$

Inspired by this question that I recently saw, I was wondering if there is a closed form for $$y = \sqrt{1+\sqrt{x+\sqrt{x^2+\sqrt{x^3+\sqrt{x^4+...}}}}}$$ as a function of $x$. Usually, in problems ...
Varun Vejalla's user avatar
39 votes
3 answers
2k views

What's the limit of $\sqrt{2 + \sqrt{2-\sqrt{2+\sqrt{2-\sqrt{2-\sqrt{2 + ...}}}}}} $?

Let's look at the continued radical $ R = \sqrt{2 + \sqrt{2-\sqrt{2+\sqrt{2-\sqrt{2-\sqrt{2 + ...}}}}}} $ whose signs are defined as $ (+, -, +, -, -, + ,-, -, -,...)$, similar to the sequence $...
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