Fonts & Character Sets ⇒ Need symbol

[teletubijs1]

How can i get n\righttarrow\infty under longrightarrow

-> (n->infinity)

[torbjorn t.]

Like this?

Code: Select all

\documentclass{article}
\usepackage{amsmath} % needed for underset command
\begin{document}
\[
\underset{n\to\infty}{\longrightarrow}
\]
\end{document}