How do I make math symbols bigger?

Question

I'm using Scrivener to convert multimarkdown to Latex and then using texshop to typeset my document.This workflow works great for me except for the fact that I'd like to be able to make certain math symbols bigger i.g. the integral sign. I've tried doing this like this: \bigint,\Biggint, etc but that doesn't work. Im sure there is a syntax that does this but I can't find it.

Answer 1

For integral symbols try \usepackage{bigints}. With the amsmath package, you can change the size of equations with the standard LaTeX resizing commands. Example

\documentclass{article}
\usepackage{amsmath}
\begin{document}
Normal size:
\[
  \sum_{i=0}^n\int_{a_i}^{b_i}f(x)
\]
Large size:
{\large
\[
  \sum_{i=0}^n\int_{a_i}^{b_i}f(x)
\]}
$\sum\int_a^b f(x)$ is normal size and {\huge$\sum\int_a^b f(x)$} is huge size.
\end{document}