Help/Adv. Equations: Difference between revisions

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==Multiple Lines in Equations==
==Multiple Lines in Equations==
Multiple lines in equations are handled between the delimiters '''\ begin{align}''' and '''\ end{align}''' with each line separated from the next with the use of '\\' at the end.  Each line can be aligned at a location designated by '&' on each line.  '''Note: there is no space between the '\' and 'begin' or 'end'.'''
Multiple lines in equations are handled between the delimiters '''<nowiki><math></nowiki>''' and '''<nowiki></math></nowiki>''' with each line separated from the next with the use of '\\' at the end.  Each line can be aligned at a location designated by '&amp;' on each line.   


For example, that the equation:
For example, that the equation:
\begin{align}
<math>
& \text{if} \quad r\le 1.57\quad {{f}_{w}}=0.3 \\
& \text{if} \quad r\le 1.57\quad {{f}_{w}}=0.3 \\
& \text{if} \quad r>1.57\quad {{f}_{w}}=0.00251\ \exp \left( 5.21\ {{r}^{-0.19}} \right) \\
& \text{if} \quad r>1.57\quad {{f}_{w}}=0.00251\ \exp \left( 5.21\ {{r}^{-0.19}} \right) \\
\end{align}
</math>


was typed as follows:<br>
was typed as follows:<br>
'''\ begin{align}<br>'''
'''<nowiki><math></nowiki><br>'''
'''&nbsp;&nbsp;&nbsp;&amp; \text{if} \quad r\le 1.57\quad {{f}_{w}}=0.3 \\ <br>'''
'''&nbsp;&nbsp;&nbsp;&amp; \text{if} \quad r\le 1.57\quad {{f}_{w}}=0.3 \\ <br>'''
'''&nbsp;&nbsp;&nbsp;&amp; \text{if} \quad r>1.57\quad {{f}_{w}}=0.00251\ \exp \left( 5.21\ {{r}^{-0.19}} \right) \\ <br>'''
'''&nbsp;&nbsp;&nbsp;&amp; \text{if} \quad r>1.57\quad {{f}_{w}}=0.00251\ \exp \left( 5.21\ {{r}^{-0.19}} \right) \\ <br>'''
'''\ end{align}<br>'''
'''<nowiki></math></nowiki><br>'''


The same multi-line equation can be numbered, by enclosing the whole of the "align" inside a "equation" class, as shown below:
The same multi-line equation can be numbered, by enclosing the whole of the "align" inside a "equation" class, as shown below:

Revision as of 13:55, 23 October 2012

Multiple Lines in Equations

Multiple lines in equations are handled between the delimiters <math> and </math> with each line separated from the next with the use of '\\' at the end. Each line can be aligned at a location designated by '&' on each line.

For example, that the equation: Failed to parse (SVG with PNG fallback (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://en.wikipedia.org/api/rest_v1/":): {\displaystyle & \text{if} \quad r\le 1.57\quad {{f}_{w}}=0.3 \\ & \text{if} \quad r>1.57\quad {{f}_{w}}=0.00251\ \exp \left( 5.21\ {{r}^{-0.19}} \right) \\ }

was typed as follows:
<math>
   & \text{if} \quad r\le 1.57\quad {{f}_{w}}=0.3 \\
   & \text{if} \quad r>1.57\quad {{f}_{w}}=0.00251\ \exp \left( 5.21\ {{r}^{-0.19}} \right) \\
</math>

The same multi-line equation can be numbered, by enclosing the whole of the "align" inside a "equation" class, as shown below: \begin{equation} \tag{25} \begin{align} & \text{if} \quad r\le 1.57\quad {{f}_{w}}=0.3 \\ & \text{if} \quad r>1.57\quad {{f}_{w}}=0.00251\ \exp \left( 5.21\ {{r}^{-0.19}} \right) \\ \end{align} \end{equation}

was typed as follows:
\ begin{equation} \tag{25}
\ begin{align}
   & \text{if} \quad r\le 1.57\quad {{f}_{w}}=0.3 \\
   & \text{if} \quad r>1.57\quad {{f}_{w}}=0.00251\ \exp \left( 5.21\ {{r}^{-0.19}} \right) \\
\ end{align}
\ end{equation}