Symbols:F

Hexadecimal

 * $\mathrm F$ or $\mathrm f$

The hexadecimal digit $15$.

Its $\LaTeX$ code is \mathrm F or \mathrm f.

Function

 * $f \left({x}\right)$

The letter $f$, along with $g$ and $h$, is frequently used to denote a general mapping or function, in particular a real function.

The $\LaTeX$ code for $f \left({x}\right)$ is f \left({x}\right).