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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}
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  • Have you tried \scalebox from the graphicx package? – azetina Apr 22 '19 at 22:23
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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} 

enter image description here

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  • Thank you very much for the input! This should get me on my way. – Alex Adinolfi Apr 24 '19 at 18:09
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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) \begin{equation}...\end{equation}:

\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*}
\begin{equation} C_n = \binom{2n}{n}-\binom{2n}{n+1} \end{equation}

\end{document}

enter image description here

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.

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  • 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

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