Laurenso
This is my code

\documentclass{article}
\usepackage{tabularray}
\UseTblrLibrary{booktabs}
\usepackage{enumitem}
\usepackage{amsmath}
\usepackage{tikz,tkz-tab}
\usepackage[paperwidth=20.5cm, paperheight=29cm, left=1.7cm,right=1.7cm,top=1.8cm,bottom=1.7cm]{geometry}
\begin{document}
\begin{booktabs}{
colspec = X[c]X[c],vlines,hlines
}
$a>1$ & $0<a<1$\\
The function is an increasing function & The function is an decreasing function \\
$\displaystyle\lim _{x \rightarrow 0^{+}} \log _a x=-\infty$, $\displaystyle\lim _{x \rightarrow+\infty} \log _a x=+\infty$ & $\displaystyle\lim _{x \rightarrow 0^{+}} \log _a x=+\infty$, $\displaystyle\lim _{x \rightarrow+\infty} \log _a x=-\infty$\\
\begin{tikzpicture}
\tkzTabInit[lgt=2.2,espcl=2.5]
{$x$/1,$y=\log_a x$/2}
{$0$,$+\infty$}
\tkzTabVar{-/$-\infty$,+/$+\infty$}
\end{tikzpicture}
& \begin{tikzpicture}
\tkzTabInit[lgt=2.2,espcl=2.5]
{$x$/1,$y=\log_a x$/2}
{$0$,$+\infty$}
\tkzTabVar{+/$+\infty$,-/$-\infty$}
\end{tikzpicture}\\
\begin{tikzpicture}[
>=stealth,declare function={
f(\x)=ln(\x)/ln(2);
xmin=-3;xmax=5;ymin=-3;ymax=3;}]
\draw[->, thick] (xmin,0)--(xmax,0) node [below left]{$x$};
\draw[->,thick] (0,ymin)--(0,ymax) node [below left]{$y$};
\node[below left] at (0, 0) {$O$};
\clip (xmin,ymin) rectangle (xmax,ymax);
\draw[smooth,samples=500,very thick, blue,domain=0.001:5] plot(\x,{f(\x)});
\end{tikzpicture} & \begin{tikzpicture}[
>=stealth,declare function={
f(\x)=-ln(\x)/ln(2);
xmin=-3;xmax=5;ymin=-3;ymax=3;}]
\draw[->, thick] (xmin,0)--(xmax,0) node [below left]{$x$};
\draw[->,thick] (0,ymin)--(0,ymax) node [below left]{$y$};
\node[below left] at (0, 0) {$O$};
\clip (xmin,ymin) rectangle (xmax,ymax);
\draw[smooth,samples=500,very thick, blue,domain=0.001:5] plot(\x,{f(\x)});
\end{tikzpicture}\\
$\displaystyle\lim _{x \rightarrow 0^{+}} \log _a x=-\infty$, $\displaystyle\lim _{x \rightarrow+\infty} \log _a x=+\infty$ & $\displaystyle\lim _{x \rightarrow 0^{+}} \log _a x=+\infty$, $\displaystyle\lim _{x \rightarrow+\infty} \log _a x=-\infty$\\
\begin{tikzpicture}
\tkzTabInit[lgt=2.2,espcl=2.5]
{$x$/1,$y=\log_a x$/2}
{$0$,$+\infty$}
\tkzTabVar{-/$-\infty$,+/$+\infty$}
\end{tikzpicture}
& \begin{tikzpicture}
\tkzTabInit[lgt=2.2,espcl=2.5]
{$x$/1,$y=\log_a x$/2}
{$0$,$+\infty$}
\tkzTabVar{+/$+\infty$,-/$-\infty$}
\end{tikzpicture}\\
\begin{tikzpicture}[
>=stealth,declare function={
f(\x)=ln(\x)/ln(2);
xmin=-3;xmax=5;ymin=-3;ymax=3;}]
\draw[->, thick] (xmin,0)--(xmax,0) node [below left]{$x$};
\draw[->,thick] (0,ymin)--(0,ymax) node [below left]{$y$};
\node[below left] at (0, 0) {$O$};
\clip (xmin,ymin) rectangle (xmax,ymax);
\draw[smooth,samples=500,very thick, blue,domain=0.001:5] plot(\x,{f(\x)});
\end{tikzpicture} & \begin{tikzpicture}[
>=stealth,declare function={
f(\x)=-ln(\x)/ln(2);
xmin=-3;xmax=5;ymin=-3;ymax=3;}]
\draw[->, thick] (xmin,0)--(xmax,0) node [below left]{$x$};
\draw[->,thick] (0,ymin)--(0,ymax) node [below left]{$y$};
\node[below left] at (0, 0) {$O$};
\clip (xmin,ymin) rectangle (xmax,ymax);
\draw[smooth,samples=500,very thick, blue,domain=0.001:5] plot(\x,{f(\x)});
\end{tikzpicture}\\
$\displaystyle\lim _{x \rightarrow 0^{+}} \log _a x=-\infty$, $\displaystyle\lim _{x \rightarrow+\infty} \log _a x=+\infty$ & $\displaystyle\lim _{x \rightarrow 0^{+}} \log _a x=+\infty$, $\displaystyle\lim _{x \rightarrow+\infty} \log _a x=-\infty$\\
\begin{tikzpicture}
\tkzTabInit[lgt=2.2,espcl=2.5]
{$x$/1,$y=\log_a x$/2}
{$0$,$+\infty$}
\tkzTabVar{-/$-\infty$,+/$+\infty$}
\end{tikzpicture}
& \begin{tikzpicture}
\tkzTabInit[lgt=2.2,espcl=2.5]
{$x$/1,$y=\log_a x$/2}
{$0$,$+\infty$}
\tkzTabVar{+/$+\infty$,-/$-\infty$}
\end{tikzpicture}\\
\begin{tikzpicture}[
>=stealth,declare function={
f(\x)=ln(\x)/ln(2);
xmin=-3;xmax=5;ymin=-3;ymax=3;}]
\draw[->, thick] (xmin,0)--(xmax,0) node [below left]{$x$};
\draw[->,thick] (0,ymin)--(0,ymax) node [below left]{$y$};
\node[below left] at (0, 0) {$O$};
\clip (xmin,ymin) rectangle (xmax,ymax);
\draw[smooth,samples=500,very thick, blue,domain=0.001:5] plot(\x,{f(\x)});
\end{tikzpicture} & \begin{tikzpicture}[
>=stealth,declare function={
f(\x)=-ln(\x)/ln(2);
xmin=-3;xmax=5;ymin=-3;ymax=3;}]
\draw[->, thick] (xmin,0)--(xmax,0) node [below left]{$x$};
\draw[->,thick] (0,ymin)--(0,ymax) node [below left]{$y$};
\node[below left] at (0, 0) {$O$};
\clip (xmin,ymin) rectangle (xmax,ymax);
\draw[smooth,samples=500,very thick, blue,domain=0.001:5] plot(\x,{f(\x)});
\end{tikzpicture}
\end{booktabs}
\end{document}


How can I use Items like this?
![image.png](/image?hash=ba8a4d291a39596115b89f1c732b3cdcfca05c143cce7e3ec4bc99578bec595e)
samcarter
You can use itemize environments if you choose a column with a fixed width (not an X column), see the example in the first table below.

Alternatively, you could use the measure=vbox option from the varwidth tabularray library, see second example.

However do you actually need an itemize environment? You could add bullet points even without it as shown in the third example:


\documentclass{article}
\usepackage{tabularray}
\UseTblrLibrary{booktabs}
\UseTblrLibrary{varwidth}
\usepackage{enumitem}
\usepackage{amsmath}
\usepackage{tikz,tkz-tab}
\usepackage[paperwidth=20.5cm, paperheight=29cm, left=1.7cm,right=1.7cm,top=1.8cm,bottom=1.7cm]{geometry}

\begin{document}

\begin{booktabs}{
colspec = {Q[5cm]X[c]},
vlines,
hlines
}
\begin{itemize}[nosep]
\item test
\item test
\end{itemize} & ooo\\
\SetCell{valign=b}
\begin{itemize}[nosep]
\item test
\item test
\end{itemize} &  ooo\\
\end{booktabs}

\begin{booktabs}{
colspec = {X[c]X[c]},
vlines,
hlines,
measure=vbox,
stretch=-1,
rowsep=2pt
}
\begin{itemize}[nosep]
\item test
\item test
\end{itemize} & ooo\\
\SetCell{valign=b}
\begin{itemize}[nosep]
\item test
\item test
\end{itemize} &  ooo\\
\end{booktabs}

\begin{booktabs}{
colspec = {X[c]X[c]},
vlines,
hlines
}
\SetCell{halign=l}
\myitem test\linebreak
\myitem test
& ooo\\
\SetCell{valign=b,halign=l}
\myitem test\linebreak
\myitem test
&  ooo\\
\end{booktabs}
\end{document}


![Screenshot 2023-01-27 at 17.51.02.png](/image?hash=5df0f2b00180168503567529f744df0b5c08b510ab37daa84cbce2caf8de27d6)

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