# LaTeX how do I write an equation

• LaTeX
Hey, how do I write an equation without the text looking all garbled up:

\begin{equation}
\frac{\partial u}{\partial x} + \frac{\partial w}{\partial z} = 0 with u = v_{x} and w = v_z
\end{equation}

I don't want to use  since I want this eqn centered and numbered but with text immediately following the major expression.

Last edited by a moderator:

Hepth
Gold Member

possible solutions:
Code:
\begin{equation}
\begin{array}{ccccc}
\frac{\partial u}{\partial x} + \frac{\partial w}{\partial z} = 0 & with & u = v_{x} & and & w = v_z
\end{array}
\end{equation}
Code:
\begin{eqnarray}
\begin{array}{rlcll}
&&\frac{\partial u}{\partial x} + \frac{\partial w}{\partial z} = 0&& \\ \mathrm{with:} & u = v_{x} & \mathrm{and} & w = v_z&
\end{array}
\end{eqnarray}
its the \mathrm{} that changes font in the mathtype and the arrays that let you space things correctly.

D H
Staff Emeritus

Use the \text macro. It is designed specifically for this problem, inserting short amounts of text within math.

\begin{equation}
\frac{\partial u}{\partial x} + \frac{\partial w}{\partial z} = 0
\ \text{with}\ u = v_{x} \ \text{and}\ w = v_z
\end{equation}

$$\frac{\partial u}{\partial x} + \frac{\partial w}{\partial z} = 0 \ \text{with}\ u = v_{x} \ \text{and}\ w = v_z$$

Hepth
Gold Member

what is that a part of? Because mathematica always puts that in its LaTeX output, but my version of LEd with MikTeX 2.8 doesn't recognize "\text"

Thanks for the input guys.

D H
Staff Emeritus