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In latex, how would one represent \math{sqrt{2} ^ sqrt{2}} (or root(2)^root(2)? I tried to respresent it as I did above, but there is an error "! Missing { inserted."

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2 Answers 2

\documentclass{article}
\usepackage{amsmath}
\begin{document}
  \[ \sqrt{2^{\sqrt{2}}}\]
  \[ \bigl(\sqrt{2}\bigr)^{\sqrt{2}}\]
\end{document}

enter image description here

To make them inline, use $ instead of \[...\]

\documentclass{article}
\usepackage{amsmath}
\begin{document}
  \[ \sqrt{2^{\sqrt{2}}}\]
  $ \sqrt{2^{\sqrt{2^{\sqrt{2}}}}}$ or $ \sqrt{2}^{\sqrt{2}^{\sqrt{2}}}$
\end{document}

enter image description here

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How would one do root(2) ^ root(2) ^ root(2)? And also how would one have that text not centered on the page. I am looking to make the sentence: Let x be [ (\sqrt{2})^{(\sqrt{2})}^{\sqrt{2}} ] –  Jim Sep 4 at 1:29
    
@Jim Please see the update. –  Harish Kumar Sep 4 at 1:55
    
Thanks, that was really helpful. –  Jim Sep 4 at 2:09
1  
@Jim You are welcome. Thanks can be conveyed through upvoting (once you get 15 rep points) and accepting the most useful answer. This is the tradition followed here. For details please see: How do you accept an answer –  Harish Kumar Sep 4 at 2:25
2  
The notation $\sqrt{2}^{\sqrt{2}}$ is commonly used (without parentheses). –  egreg Sep 4 at 8:18

Or...........

$2^{1/\sqrt{2}}$

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While they're equivalent, that's not really the question being asked. :) –  Sean Allred Sep 4 at 11:51

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