tkz-tabOur visual WYSIWYG editor builds your sign or variation table with the mouse and generates clean tkz-tab code. Ready presets (1 root, 2 roots, 1 min, 1 max, 2 extrema), interactive editing, browser PDF compile.
tkz-tab is the standard, but its syntax is intimidatingFor clean sign or variation tables in LaTeX, the tkz-tab package (built on TikZ) is the reference. But its specific syntax slows down most teachers. Three frictions every time:
\tkzTabInit, \tkzTabLine, \tkzTabVar… Three commands to memorize with very precise arguments (aspect ratios, / separators, double-bar d).
For a function undefined at a point (e.g. 1/x at 0), you need a vertical double bar and a discontinuity in the variation. The syntax is very specific and hard to memorize.
Add a root, flip a variation direction, tweak an extremum: each attempt = recompile to check. For a 5-function exam, it's an easy hour.
Our editor exposes a visual WYSIWYG table and generates tkz-tab code in real time. You see what you get and iterate instantly.
Sign tables (1, 2, 3 roots), variation tables (increasing, decreasing, 1 min, 1 max, 2 extrema), combined (sign of f' + variations of f) — pick and adjust.
Click to change a sign (+, −, 0, ‖). Drag to reorder x values. Type extrema in LaTeX (math mode with preview).
tkz-tab code\tkzTabInit, \tkzTabLine, \tkzTabVar are generated in the right order with the right arguments. Copy-paste as-is.
Sign table (1, 2 or 3 roots), variation table (increasing, decreasing, min, max, 2 extrema), or combined.
Edit x values, signs (+/−/0/‖), extrema, add or remove columns.
Copy the \begin{tikzpicture}…\tkzTab…\end{tikzpicture} block, or compile the PDF directly in the browser.
\begin{tikzpicture}
\tkzTabInit{$x$ /1, $x^2-4$ /1.5}{-\infty, -2, 2, +\infty}
\tkzTabLine{,+,0,-,0,+,}
\end{tikzpicture}\begin{tikzpicture}
\tkzTabInit{$x$ /1, $f(x)=x^2$ /2}{-\infty, 0, +\infty}
\tkzTabVar{+/ +\infty, -/ 0, +/ +\infty}
\end{tikzpicture}\begin{tikzpicture}
\tkzTabInit{$x$/1, $f'(x)$/1, $f(x)$/1.5}{-\infty, -1, 1, +\infty}
\tkzTabLine{,+,0,-,0,+,}
\tkzTabVar{-/-\infty, +/2, -/-2, +/+\infty}
\end{tikzpicture}\begin{tikzpicture}
\tkzTabInit{$x$/1, $1/x$/1.5}{-\infty, 0, +\infty}
\tkzTabVar{-/-\infty, D-/+0, -/+\infty}
\end{tikzpicture}| By hand | With Sarmate.net | |
|---|---|---|
| Time for a combined table | 20 to 30 min | Under 2 minutes |
tkz-tab knowledge | Required | None |
| Double bars / discontinuities | Specific syntax to memorize | Dedicated button |
| Modification (add a root) | Recompute all columns | One-click insert |
| Visual preview | Recompile every time | Real-time |
| Math-mode extrema | Raw LaTeX input | Live KaTeX preview |
tkz-tab package (which loads TikZ internally). Use \tkzTabInit for headers, then \tkzTabLine{,-,0,+,} for signs (where -, +, 0 or empty describe each cell). Our editor exposes this with the mouse.\tkzTabVar with a multi-value comma-separated syntax: \tkzTabVar{-/0, +/2, -/-3} where each +/V or -/V indicates a high or low point with its value. Our editor generates this for you.\tkzTabLine, use d instead of the sign: \tkzTabLine{,-,d,+,}. For variations, skip the value in \tkzTabVar. Our editor has a "double bar" button that handles this automatically, kept in sync with the sign line.\usepackage{tikz} then \usepackage{tkz-tab}. The tkz-tab package has been included in standard TeX Live since 2010. On Sarmate.net: nothing to install, the package is preloaded in our online compiler.\tkzTabInit[lgt=2,espcl=2]{…} lets you adjust the header column width (lgt) and column spacing (espcl). For overall size, wrap everything in \begin{tikzpicture}[scale=0.8]…\end{tikzpicture}.\tkzTabVar syntax?Open the editor in one click. No signup for the demo. Ready-to-paste tkz-tab code.