Difference between revisions of "Multiline equations"

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(→‎Cases: Added an example)
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== Cases ==
 
== Cases ==
 +
 +
Context provides a <cmd>startmathcases</cmd> <cmd>stopmathcases</cmd> pair to make it easy get cases.
 +
<texcode>
 +
\startformula
 +
f(x) = \startmathcases
 +
  \NC x, \NC if $0 \le x \le \frac12$ \NR
 +
  \NC 1-x ,\NC if $\frac12 \le x \le 1$ \NR
 +
\stopmathcases
 +
\stopformula
 +
</texcode>
 +
 +
gives
 +
 +
<context>
 +
\startformula
 +
f(x) = \startmathcases
 +
  \NC x, \NC if $0 \le x \le \frac12$ \NR
 +
  \NC 1-x ,\NC if $\frac12 \le x \le 1$ \NR
 +
\stopmathcases
 +
\stopformula
 +
</context>
 +
 +
The cases environment consists of two columns, separated by <cmd>NC</cmd>. The second column is by default in text mode. Each line must end with a <cmd>NR</cmd>.
  
 
== Numbered Cases ==
 
== Numbered Cases ==

Revision as of 01:23, 8 February 2006

Basic Alignment

Two modes of input

  • Latex style
\startformula \startalign
 v &= u + at \\
 h &= ut + \frac12 gt^2 \\
\stopalign \stopformula

Note the \\ in the last line, above.

This appears as follows:

  • Context Style
\startformula \startalign
 \NC v \NC = u + at \NR
 \NC h \NC= ut + \frac12 gt^2 \NR
\stopalign \stopformula

(The examples here will focus on the context style, having two styles can be confusing -- Aditya )

Changing the number of columns

The above equations were aligned at =. Suppose you also want the + to align. Well, this is simple in context, simply specify the number of columns with \startalign


\startformula \startalign[n=3]
 \NC v \NC = u \NC+ at \NR
 \NC h \NC= ut \NC+ \frac12 gt^2 \NR
\stopalign \stopformula

Alignment of each column

If you want more control over the formatting, and want the middle column to be center aligned, you can do that by

\startformula \startalign[n=3,align={right,middle,left}]
 \NC v \NC = u \NC+ at \NR
 \NC h \NC= ut \NC+ \frac12 gt^2 \NR
\stopalign \stopformula

Working with equation numbering

Changing the number of columns

Cases

Context provides a \startmathcases \stopmathcases pair to make it easy get cases.

\startformula
 f(x) = \startmathcases
   \NC x, \NC if $0 \le x \le \frac12$ \NR
   \NC 1-x ,\NC if $\frac12 \le x \le 1$ \NR
\stopmathcases
\stopformula

gives

The cases environment consists of two columns, separated by \NC. The second column is by default in text mode. Each line must end with a \NR.

Numbered Cases