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Command/startformula - Revision history
2024-03-29T15:47:03Z
Revision history for this page on the wiki
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Taco: Created page with "Documentation for \startformula ... \stopformula"
2023-09-14T11:08:53Z
<p>Created page with "Documentation for \startformula ... \stopformula"</p>
<p><b>New page</b></p><div><cd:commandgroup name="formula" type="environment" xmlns:cd="http://wiki.contextgarden.net/commanddoc/20200807"><br />
<cd:shortdesc><!-- a short command summary goes here --><br />
The environment <tt>\startformula ... \stopformula</tt> is used for displayed mathematical material<br />
</cd:shortdesc><br />
<cd:variants><br />
<cd:command category="mathematics" file="strc-mat.mkiv" interfacedate="2020-07-14T09:24" interfacefile="i-formula.xml" level="document" name="formula" type="environment" variantnumber="1"><br />
<cd:arguments><br />
<cd:keywords list="yes" optional="yes" ordinal="1"><br />
<cd:keywordsdoc></cd:keywordsdoc><br />
<cd:constant type="packed"></cd:constant><br />
<cd:constant type="tight"></cd:constant><br />
<cd:constant type="middle"></cd:constant><br />
<cd:constant type="frame"></cd:constant><br />
<cd:constant type="depth"></cd:constant><br />
<cd:constant type="line"></cd:constant><br />
<cd:constant type="halfline"></cd:constant><br />
<cd:constant method="none" prefix="-" type="line"></cd:constant><br />
<cd:constant method="none" prefix="-" type="halfline"></cd:constant><br />
<cd:inherit name="setupbodyfont"></cd:inherit><br />
</cd:keywords><br />
</cd:arguments><br />
</cd:command><br />
<cd:command category="mathematics" file="strc-mat.mkiv" interfacedate="2020-07-14T09:24" interfacefile="i-formula.xml" level="document" name="formula" type="environment" variant="assignment" variantnumber="2"><br />
<cd:arguments><br />
<cd:assignments list="yes" optional="yes" ordinal="1"><br />
<cd:assignmentsdoc></cd:assignmentsdoc><br />
<cd:parameter name="option"><br />
<cd:paramdoc></cd:paramdoc><br />
<cd:constant type="packed"></cd:constant><br />
<cd:constant type="tight"></cd:constant><br />
<cd:constant type="middle"></cd:constant><br />
<cd:constant type="frame"></cd:constant><br />
<cd:constant type="depth"></cd:constant><br />
<cd:constant type="line"></cd:constant><br />
<cd:constant type="halfline"></cd:constant><br />
<cd:constant method="none" prefix="-" type="line"></cd:constant><br />
<cd:constant method="none" prefix="-" type="halfline"></cd:constant><br />
<cd:inherit name="setupbodyfont"></cd:inherit><br />
</cd:parameter><br />
<cd:parameter name="margin"><br />
<cd:paramdoc></cd:paramdoc><br />
<cd:constant type="yes"></cd:constant><br />
<cd:constant type="no"></cd:constant><br />
<cd:constant type="standard"></cd:constant><br />
<cd:constant type="cd:dimension"></cd:constant><br />
</cd:parameter><br />
<cd:parameter name="grid"><br />
<cd:paramdoc></cd:paramdoc><br />
<cd:inherit name="snaptogrid"></cd:inherit><br />
</cd:parameter><br />
</cd:assignments><br />
</cd:arguments><br />
</cd:command><br />
</cd:variants><br />
<cd:description>The contents of this environment are typeset in mathematical mode. The environment as a whole can also be used as an argument of and immediately preceding {{cmd|placeformula}}, in which case the typeset result can be numbered and referenced.<br />
<br />
<br />
</cd:description><br />
<cd:examples><cd:example title=""><context source="yes"><br />
<br />
This is the first mathematical formula<br />
\placeformula[First]<br />
\startformula<br />
\sin^2(t)^2 + \cos^2(t) = 1.<br />
\stopformula<br />
<br />
This is another formula<br />
\placeformula[eqn:tangent]<br />
\startformula<br />
\cos^2(t) = \frac{1}{1+\tan^2(t)}.<br />
\stopformula<br />
As one may see from relation~(\in[eqn:tangent]), $\cos(t)$ and <br />
$\sin(t)$ can be determined by $\tan(t)$\dots <br />
<br />
This is the third formula<br />
\placeformula[Pythagora]<br />
\startformula<br />
|a+b|^2 = |a|^2 + |b|^2<br />
\stopformula<br />
Clearly equality (\in[Pythagora]) holds for $a,b \in {\Bbb R}^n$<br />
if and only if $(a|b) =0$, where the scalar product <br />
$(\cdot|\cdot)$ on ${\Bbb R}^n$ is defined to be <br />
\startformula<br />
(a|b) := a\cdot b =\sum_{j=1}^{n}a_jb_j, \qquad |a|^2 := (a|a).<br />
\stopformula<br />
(Note that the above equation is {\it not\/} numbered).<br />
</context></cd:example></cd:examples><br />
<cd:notes></cd:notes><br />
<cd:seealso><br />
<cd:commandref name="definebodyfont" originator="system"></cd:commandref><br />
<cd:commandref name="setupbodyfont" originator="system"></cd:commandref><br />
<cd:commandref name="snaptogrid" originator="system"></cd:commandref><br />
<cd:source file="strc-mat.mkiv" originator="system"></cd:source><br />
<cd:wikipage originator="system" page="Category:Mathematics"></cd:wikipage><br />
<cd:commandref name="defineformula">Allows the definition of special mathematical environments</cd:commandref><br />
<cd:commandref name="_startformula">For some predefined special mathematical environments</cd:commandref></cd:seealso><br />
</cd:commandgroup></div>
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