fontsize
I want to increase the size of a particular text. Suppose I want to write the following:
"I am a hungry cat I want to drink the rains I am not thirsty"
I want the middle line to be written in big and I want the 1st and 3rd line to write very small. How can I do that?
\scriptstyle is hardcoded into environment subarray, which is used by \substack. As workaround, \scriptstyle can be locally redefined as \textstyle:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
\implies \underbrace{x(t) = z(t)}_{%
\let\scriptstyle\textstyle
\substack{x(t)=y(t)\\y(t)=z(t)}}
\]
\end{document}
A cleaner result can be achieved by using environment array together with \textstyle. This fixes also the too narrow line spacing of \substack:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
\implies \underbrace{x(t) = z(t)}_{%
\textstyle
\begin{array}{c}
x(t)=y(t)\\
y(t)=z(t)
\end{array}
}
\]
\end{document}
And a third variant using gathered
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
\implies \underbrace{x(t) = z(t)}_{%
\textstyle
\begin{gathered}
x(t) = y(t)\\
y(t) = z(t)
\end{gathered}
}
\]
\end{document}
Use \scriptsize for both and \dfrac.
\documentclass{article}
\usepackage{amsmath,pgfplots,fouriernc}
\begin{document}
\begin{tikzpicture}
\begin{axis}[axis lines=left,clip=false]
\addplot{x} node [right] {\scriptsize$\dfrac{\text{foo}}{2}$};
\addplot{x/2} node [right] {\scriptsize foo};
\end{axis}
\end{tikzpicture}
\end{document}
Here are the two words side by side
Best Answer
You can influence the font size as following: