1

I want enlarge the "only math symbols" for the all document. But how?

My code:

\documentclass[11pt,addpoints]{exam}
\usepackage{amsfonts,amssymb,amsmath, amsthm}
\usepackage{systeme}
\usepackage{mathrsfs}
\firstpageheader{Sample Exam (\numpoints\ points)\\ September 26, 2019}{}{Name: \underline{\hspace{2.5in}}}
\runningheader{Sample Exam}{}{Page \thepage\ of \numpages}
\runningheadrule

\begin{document}
\begin{questions} 

\fullwidth{\emph{Math mode} is used to display $x+y$ mathematical content in \LaTeX, and there are two main forms of math mode $x^2-y^2$: \emph{display mode} and \emph{inline mode}.  Question~\ref{DisplayModeExample} uses \emph{display mode}, which centers the math $sinx-2x$ content on its own line.  Question~\ref{InlineModeExample} uses \emph{inline mode} to render the math content within a line of text.}

\question[10] \label{DisplayModeExample}
Find an equation for the tangent line to the following curve at the point (0,1).
\[2xy^3 + y^4 = 1 + x^3y\]
\end{questions}
\end{document}
7
  • Welcome to TeX.SE!
    – Mensch
    Sep 7, 2021 at 14:49
  • Welcome to TeX.SE! Since your question is rather simple, you could easily provide a much simpler minimal working examples (MWE). ;-)
    – Gaussler
    Sep 7, 2021 at 14:49
  • why are you using $\displaystyle...$ rather than \[....\] ? Sep 7, 2021 at 14:53
  • @Gaussler i edited the code
    – suarez
    Sep 7, 2021 at 14:57
  • @DavidCarlisle I'm a bit of a novice so:)
    – suarez
    Sep 7, 2021 at 14:59

1 Answer 1

3

The default at normalsize for the 11pt option is

 \DeclareMathSizes{10.95}{10.95}{8}{6}

that is, if the text font is 10.95pt use 10.95pt in math text size, 8pt in scripts and 6pt in scriptscript size

So before:

enter image description here

after:

enter image description here

\RequirePackage{fix-cm}
\documentclass[11pt,addpoints]{exam}
\usepackage{amsfonts,amssymb,amsmath, amsthm}
\usepackage{systeme}
\usepackage{mathrsfs}
\firstpageheader{Sample Exam (\numpoints\ points)\\ September 26, 2019}{}{Name: \underline{\hspace{2.5in}}}
\runningheader{Sample Exam}{}{Page \thepage\ of \numpages}
\runningheadrule

     \DeclareMathSizes{10.95}{15}{12}{10}

\begin{document}
\begin{questions} 

\fullwidth{\emph{Math mode} is used to display $x+y$ mathematical content in \LaTeX, and there are two main forms of math mode $x^2-y^2$: \emph{display mode} and \emph{inline mode}.  Question~\ref{DisplayModeExample} uses \emph{display mode}, which centers the math $sinx-2x$ content on its own line.  Question~\ref{InlineModeExample} uses \emph{inline mode} to render the math content within a line of text.}

\question[10] \label{DisplayModeExample}
Find an equation for the tangent line to the following curve at the point (0,1).
\[2xy^3 + y^4 = 1 + x^3y\]
\end{questions}
\end{document}
8
  • I left it but never $sin x$ always use $\sin x$ Sep 7, 2021 at 15:58
  • Thanks! I guess most Tex users does not know this simple but useful command
    – Black Mild
    Sep 7, 2021 at 16:02
  • You are right sir. I should have used $\sin x$. Thank you very much for your helps:)
    – suarez
    Sep 7, 2021 at 16:04
  • 1
    @BlackMild actually I would never use it as here increasing the main textstyle font to be larger than the surrounding text. Its main use is for setting up alternative font sets some of which can not allow the script styles to get so small and remain readable (Computer modern small sizes have a lot of care to vary the shapes to maintain legibility) so using it with the first two arguments unchanged but larger values for the 2nd and 3rd arguments is quite common. Sep 7, 2021 at 16:05
  • 1
    for [10pt] the textsize is 10pt so the first argument should be {10} @suarez Sep 7, 2021 at 16:28

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