# Math with newmat

Here some short examples of how to use math with the newmat module, which "collects macros that TeX users kind of expect to be available when typesetting math," according to the documentation. These currently include the {{cmd|frac</cmd> family ({{cmd|frac</cmd>, {{cmd|dfrac</cmd>, {{cmd|tfrac</cmd>, {{cmd|binom</cmd>, etc.), the {{cmd|QED</cmd> symbol, the {{cmd|boxed</cmd> command, and the subarray, substack, and smallmatrix environments, along with a few others. At one time it also included the {{cmd|text</cmd> command, though that has now been moved to the core.

Inline maths:

\usemodule[newmat]

Inline math: $x = \frac{y}{2z} + x_{\text{center}}$


produces Display math:

\usemodule[newmat]

Display math:
\startformula
q = \delta \frac{\partial p}{\partial x} =
\delta(\phi) p_{vsat}(\theta) \frac{\partial \phi}{\partial x} =
\left[ \frac{\delta_a}{\mu(\theta)} p_{vsat}(\theta) \right] \frac{\partial \phi}{\partial x} =
k \frac{\partial \phi}{\partial x}
\stopformula Legends:

\usemodule[newmat]

\startlegend
\leg k \\ water vapor permeability \\ \\
\leg K \\ water vapor permeance \\ \\
\leg S \\ surface \\ \\
\leg L \\ length \\ \\
\stoplegend Aligned display math:

\usemodule[newmat]

\startformula\eqalign{
t_{L,\text{early}} & = t_{L,\text{late}} = t_{L,\text{ray}} \cr
& = 6\ \mu m \cr
}\stopformula (These samples are adapted from an example sent to the mailing list on 2005-06-28 by Wolfgang Zillig.)