I'm trying to use auto sizing of parentheses. Can you see why the below is creating brackets all of the same size? I've tried removing reference to the function \x
, but this doesn't change anything. Is there a problem with using newlines and tabs to nicely display code like this?
Note: I'm using ShareLaTeX with no access to a LaTeX compiler atm.
\documentclass{article}
\usepackage{amsmath, amsthm, bm, amssymb}
% make bold x to the bracketed n (optional)
\newcommand{\x}[1][n]{\bm{x}^{\left(#1\right)}}
\begin{document}
\begin{align*}
\ell &= \prod_{n=1}^N \left[
\sum_{k=1}^K \left[
\pi_k \prod_{d=1}^D
p_{kd}^{\x_d} \left(1-p_{kd}\right)^{1-\x_d}
\right]
\right]
\end{align*}
\end{document}
Best Answer
It is always desirable to use the controlled sizes offered by the
ams
package with sizes as:\big, \Big, \bigg, \Bigg
. The reason here is that\left
or\right
only provides a single size bigger than a normal brace or bracket. For a comparison of the above sizes, see this picture, e.g.:So, in your case you can do this as follows:
Refer to the
ams
package documentation for more details:The output then is proportional as this: