signchart directive

The signchart directive generates a sign chart for a function, showing where it is positive, negative, and zero.

Basic usage

```{signchart}
---
function: x**2 - 4, f(x)
factors: true
width: 80%
---
```

Syntax overview

The function key takes an expression and an optional label separated by a comma. When factors: true is set, the chart also shows the sign of each factor.

Options

Option	Meaning	Default
function	Function expression and optional label (e.g. x**2 - 4, f(x))	(required)
factors	Show sign rows for individual factors	false
xmin	Left bound of the x-axis	auto
xmax	Right bound of the x-axis	auto
width	CSS width	—
align	left, center, or right	—
class	Extra CSS classes	—
name	Stable anchor / reference name	—
alt	Alt text	—
nocache	Force regeneration	—
debug	Keep debug output	—

Notes

• Aliases: sign-chart

• For broader function support (trig, rational, etc.), see signchart-2.

Source

src/munchboka_edutools/directives/signchart.py