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KaTeX

Equation Annotations

Use annotations to explain the pieces of an equation. Explore F=maF=ma, Newton’s second law for constant mass, with three ways to draw attention to a selected term.

Source code

Explain a term

Force (FF)

The net external force along the chosen direction. It equals mass times acceleration in that direction.

SI unit: N=kg m s−2\mathrm{N}=\mathrm{kg\,m\,s^{-2}}

Rendered result
F⏟force=m a\underbrace{F}_{\text{force}}=m\,a
TeX source
\underbrace{F}_{\text{force}}=m\,a

Make the meaning visible

Color draws attention, a box isolates a term, and an underbrace adds a label below it. The written explanation stays visible in every mode, so understanding the selected term does not depend on color. Explore KaTeX’s brace annotations and color commands for more possibilities.