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Is it possible to adjust the padding around elements in a matrix, as indicated in the figure below.

Example of cramped matrix

The code is shown below

\documentclass{scrartcl} \usepackage{amsmath} \begin{document} ... in general we have \begin{equation} \begin{bmatrix} \frac{\partial f_1}{\partial x_1} & \cdots & \frac{\partial f_1}{\partial x_n} \\ \vdots & \ddots & \vdots \\ \frac{\partial f_m}{\partial x_1} & \cdots & \frac{\partial f_m}{\partial x_n} \end{bmatrix} \end{equation} and for the particular case of $m=n=2$ \begin{equation} \begin{bmatrix} \frac{\partial f_1}{\partial x_1} & \frac{\partial f_1}{\partial x_2} \\ \frac{\partial f_2}{\partial x_1} & \frac{\partial f_2}{\partial x_2} \end{bmatrix} \end{equation} Is it possible to insert some space around the elements in (2)? The matrix looks a bit cramped. \end{document}
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  • The cellspace package wiith option [math] does that. Commented Sep 20, 2020 at 9:29
  • The package nicematrix provides tools to control that and also many other points. Commented Sep 20, 2020 at 9:48

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Here's a code with cellspace. Unrelated: I suggest using the diffcoeff package to simplify typing of partial derivatives, and the \medmath command from nccmath to have medium-sized fractions in matrices (the default is \tfrac):

\documentclass{article} \usepackage{amsmath, nccmath} \usepackage{diffcoeff} \usepackage[math]{cellspace} \setlength{\cellspacetoplimit}{2pt} \setlength{\cellspacebottomlimit}{2pt} \begin{document} \[ J = \begin{pmatrix} \medmath{\diffp{f_1}{x_1}} & \medmath{\diffp{f_1}{x_2}} \\ \medmath{\diffp{f_2}{x_1}} & \medmath{\diffp{f_2}{x_2}} \end{pmatrix} \] \end{document}

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