# Double prime(a″) symbol in LaTeX

Symbol/Unicode Double prime/U+2033
Type of symbol Mathematics
Package (requirement) No
Argument No
Latex command a^{\prime\prime}
Example a^{\prime\prime} → a”

The easiest way to print a prime symbol in a latex document is to use a prime(') symbol or \prime command. Then you understand that for double prime you have to use the symbol or command twice at the same time.

\documentclass{article}
\newcommand{\dblprime}{^{\prime\prime}}
\begin{document}
$$f''(x)$$
$$f^{\prime\prime}=\frac{d^2 f}{dx^2}$$
% Use \newcommand for create custom command
$$f\dblprime$$
$$f\dblprime_{xy}(x,y)$$
$$18^\prime 36\dblprime 16$$
$$1^\prime 33\dblprime 02$$
\end{document}

Output :

Different packages already have macros defined for this symbol. For example the stix package.

\documentclass{article}
\usepackage{stix}
\begin{document}
$$f^\dprime$$
$$f^\dprime(x)$$
$$f^\dprime=\frac{d^2 f}{dx^2}$$
\end{document}

Output :