[OS X TeX] A little help needed (math formula problem)
Samuel Lelievre
samuel.lelievre.tex at free.fr
Fri Dec 18 05:18:26 EST 2009
Joe Java wrote:
>From: Joe Java <joe.java at eyeasme.com>
>To: <macosx-tex at email.esm.psu.edu>
>Date: Thu, 17 Dec 2009 08:32:15 -0700
>
>Hello TeX group,
>
>I wrote a webpage for testing MathML support in a browser.
>I used TeX as the "gold standard" for mathematical representation.
>See: https://eyeasme.com/Joe/MathML/MathML_browser_test
>Click on any equation to see the code that generated it.
>
>Comments and suggestions on improving the TeX coding for
>any of the examples would be appreciated.
Hello! In the example with lots of root signs, I find it unnice
that the bottoms of the root signs get lower and lower (leftwards).
I thought of aligning these bottoms of root signs using \smash[b],
as explained in section 30 of H. Voss's "Mathmode" guide.
http://www.tex.ac.uk/tex-archive/info/math/voss/mathmode/Mathmode.pdf
However, I just tried this out, and I'm a bit puzzled with the
results. In the example below, I defined \rt to mimick \sqrt,
and \srt to be the smashed version, but I'm obviously missing
some subtleties.
- I would expect the command \rt to work just as \sqrt, but it
doesn't: using \rt, the leftmost root sign slightly sticks out
of the fraction bar, contrary to the \sqrt version.
- With \srt, first, compiling the whole expression seems to take
forever, so I've commented it out in the example below, and put
a reduced version with fewer root signs.
- second, I don't understand why the bottoms of the root signs
are not vertically aligned;
- last, the horizontal bars at the top are not evenly spaced as
they were with the \sqrt command, is there a way to fix that?
Any hints appreciated...
Best, SL
%%% smash-root.tex %%%
\documentclass[12pt]{article}
\usepackage{amssymb,amsmath}
\newcommand{\rt}[2][{}]{\sqrt[#1]{#2}}
\newcommand{\srt}[2][{}]{\sqrt[#1]{\smash[b]{#2}}}
\begin{document}
${\displaystyle
\frac{\sqrt{1 + \sqrt[3]{2 + \sqrt[5]{3 + \sqrt[7]{4
+ \sqrt[11]{5 + \sqrt[13]{6 + \sqrt[17]{7
+ \sqrt[19]{A}}}}}}}}}{e^\pi} = x^{'''}
}$
${\displaystyle
\frac{\rt{1 + \rt[3]{2 + \rt[5]{3 + \rt[7]{4
+ \rt[11]{5 + \rt[13]{6 + \rt[17]{7
+ \rt[19]{A}}}}}}}}}{e^\pi} = x^{'''}
}$
% ${\displaystyle
% \frac{\srt{1 + \srt[3]{2 + \srt[5]{3 + \srt[7]{4
% + \srt[11]{5 + \srt[13]{6 + \srt[17]{7
% + \srt[19]{A}}}}}}}}}{e^\pi} = x^{'''}
% }$
${\displaystyle
\frac{\srt{1 + \srt[3]{2 + \srt[5]{3
+ \srt[7]{4}}}}}{e^\pi} = x^{'''}
}$
\end{document}
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