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I'm using the newtxmath package, but I don't like the symbol layout for the roots. I would like to go back to the root symbol of computer modern font.

any command line to do it, after \usepackage{newtxmath}?

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\RequirePackage{fix-cm}
\documentclass{article}
\usepackage{amsmath}
\usepackage{newtxtext,newtxmath}

\DeclareSymbolFont{cmsymbols}{OMS}{cmsy}{m}{n}
\DeclareSymbolFont{cmlargesymbols}{OMX}{cmex}{m}{n}
\DeclareMathRadical{\sqrtsign}{cmsymbols}{"70}{cmlargesymbols}{"70}

\begin{document}

$\sqrt{2}+\sqrt{a^5}+\sqrt{\dfrac{1}{2}}$

\end{document}

enter image description here

If you remove the three lines starting with \Declare... you get back the NewTX radicals

enter image description here

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  • 2
    Thank you very much, egreg. I really appreciate your concern and effort to post brilliant answers!!!
    – Martín Moreno
    Mar 20 at 0:18

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