Math & Science ⇒ A misplaced comma

[NELLLY]

Hi
when I wrote

Code: Select all

\begin{eqnarray*}
I_1&=&\left[\mu_0-\frac{\rm k_1 \sigma}{\rm \sqrt{n_1}},
\mu_0+\frac{\rm k_1\sigma} {\sqrt{n_1}}\right]
\end{eqnarray*}

the comma is not aligned with the line of the fraction, is there a solution?

[gmedina]

Hi,

try something like this:

Code: Select all

\documentclass{article}
\usepackage{amsmath}

\begin{document}

\begin{align*}
  I_1 &= \left[\mu_0-\frac{\rm k_1 \sigma}{\rm \sqrt{n_1}}\raisebox{.7mm}{,}\,
    \mu_0+\frac{\rm k_1\sigma} {\sqrt{n_1}}\right]
\end{align*}

\end{document}

Reasons not to use eqnarray (and its relatives) can be found in some other threads.

[localghost]

You should not use the eqnarray environment anymore [1]. This behaviour is quite usual since the comma is placed on the baseline in opposite to the fraction bar. If you want to modify that, try the \raisebox command. But think that would disturb the appearance generally.

[1] The PracTeX Journal - TeX Users Group | Lars Madsen: Avoid eqnarray!


Best regards
Thorsten

[NELLLY]

This works perfectly. Thank you very much.