Help/Adv. Equations: Difference between revisions

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Some numbered equations have multiple lines and generally
==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.


\begin{equation}
For example, that the equation:
\begin{align}
\begin{align}
\left( {{\rho }_{s}}-\rho \right)g\frac{\pi }{6}{{d}^{3}}={{C}_{D}}\frac{\pi }{8}\rho W_{s}^{2}{{d}^{2}} \\
& \text{if}\quad r\le 1.57\quad {{f}_{w}}=0.3 \\
\left( {{\rho }_{s}}-\rho \right)g\frac{\pi }{6}{{d}^{3}}={{C}_{D}}\frac{\pi }{8}\rho W_{s}^{2}{{d}^{2}}
& \text{if}\quad r>1.57\quad {{f}_{w}}=0.00251\ \exp \left( 5.21\ {{r}^{-0.19}} \right) \\
\end{align}
\end{align}
\end{equation}


was typed as follows:<br>
was typed as follows:<br>
'''\ begin{equation}<br>'''
'''\begin{align}<br>'''
'''&nbsp;&nbsp;&nbsp;\left( {{\rho }_{s}}-\rho \right)g\frac{\pi }{6}{{d}^{3}}={{C}_{D}}\frac{\pi }{8}\rho W_{s}^{2}{{d}^{2}}<br>'''
'''& \text{if}\quad r\le 1.57\quad {{f}_{w}}=0.3 \\ <br>'''
'''\ end{equation}<br>'''
'''& \text{if}\quad r>1.57\quad {{f}_{w}}=0.00251\ \exp \left( 5.21\ {{r}^{-0.19}} \right) \\ <br>'''
'''\end{align}<br>'''

Revision as of 22:01, 2 October 2011

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.

For example, that the equation: \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}

was typed as follows:
\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}

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