# Changing font size of a specific portion of the overall document

I have to write a paper for one of my classes and I have what I'm sure is a very basic question that I can't seem to find the answer for. Basically, I just want to be able to increase the font size of some equations because the default size is a bit too small in my opinion. I only want to change the font size for the code listed below, not for the entire document. I am still very new to Latex so the code is probably a mess.

\begin{center}
{C\textsubscript{n}}=$\frac{(2n)!}{(n+1)!n!}$
\hspace{1.5cm}
{C\textsubscript{n}}=\frac{1}{n+1}\binom{2n}{n} \hspace{1.5cm} {C\textsubscript{n}}=\binom{2n}{n}-\binom{2n}{n+1} \end{center}  • Have you tried \scalebox from the graphicx package? – azetina Apr 22 '19 at 22:23 ## 2 Answers I propose to use one of the align* or \alignat* environments: you'll have your fractions and binomial coefficients in \displaystyle. The latter environment gives you full control on the spacing between the groups. You also can use the medium-sized commands from nccmath (~ 80% of \displaystyle). Here is a demo: \documentclass{article} \usepackage{mathtools, nccmath} \begin{document} \begin{align*} \mathrm{C}_{n} & =\frac{(2n)!}{(n+1)!\,n!} & \mathrm{C}_{n} &= \frac{1}{n+1} \binom{2n}{n} & \mathrm{C}_{n} &=\binom{2n}{n}-\binom{2n}{n+1} \end{align*}\bigskip \begin{alignat*}{3} \mathrm{C}_{n} & =\mfrac{(2n)!}{(n+1)!\,n!} &\hspace{1cm} \mathrm{C}_{n} &= \mfrac{1}{n+1} \mbinom{2n}{n} &\hspace{1cm} \mathrm{C}_{n} &=\mbinom{2n}{n}-\mbinom{2n}{n+1} \end{alignat*} \end{document}  • Thank you very much for the input! This should get me on my way. – Alex Adinolfi Apr 24 '19 at 18:09 There are ways to adjust the font size, but in this case I think what you are after is "displayed math," which will (a) center the equation automatically, and (b) use a larger font. You can get displayed math mode by wrapping your math in ...\$, or $...$, or \begin{equation*}...\end{equation*}, or (if you want equation numbers) ...:

\documentclass{article}

\usepackage{amssymb,amsmath}

\begin{document}

$C_n = \frac{(2n)!}{(n+1)!n!}$
\begin{equation*} C_n = \frac{1}{n+1}\binom{2n}{n} \end{equation*}
$$C_n = \binom{2n}{n}-\binom{2n}{n+1}$$

\end{document}


And as @Bernard said, align is a good option if you want to vertically align the equal signs. There are lots of LaTeX environments for doing this; see https://en.wikibooks.org/wiki/LaTeX/Advanced_Mathematics#Vertically_aligning_displayed_mathematics.

• And as @Bernard said, align is a good option if you want to vertically align the equal signs. There are lots of LaTeX environments for doing this; see en.wikibooks.org/wiki/LaTeX/…. – LarrySnyder610 Apr 22 '19 at 23:15
• Maybe you should add the content this comment to the answer. – user156344 Apr 23 '19 at 9:40
• Thanks for the input! I should be good to go with this issue now. – Alex Adinolfi Apr 24 '19 at 18:10