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Created page with "Documentation for \placeformula"
<cd:commandgroup name="placeformula" xmlns:cd="http://wiki.contextgarden.net/commanddoc/20200807">
<cd:shortdesc>The command <tt>\placeformula</tt> places a displayed math formula
</cd:shortdesc>
<cd:variants>
<cd:command category="mathematics" file="strc-mat.mkiv" interfacedate="2020-07-14T09:24" interfacefile="i-formula.xml" level="document" name="placeformula" variantnumber="1">
<cd:arguments>
<cd:keywords list="yes" optional="yes" ordinal="1">
<cd:keywordsdoc></cd:keywordsdoc>
<cd:constant type="+"></cd:constant>
<cd:constant type="-"></cd:constant>
<cd:constant type="cd:reference"></cd:constant>
</cd:keywords>
<cd:keywords delimiters="braces" optional="yes" ordinal="2">
<cd:keywordsdoc></cd:keywordsdoc>
<cd:constant type="cd:text"></cd:constant>
</cd:keywords>
</cd:arguments>
</cd:command>
</cd:variants>
<cd:description>Place a displayed math formula, including equation number.
The <code>text</code> argument is typically a <code>\startformula ... \stopformula </code> block instead of a literalb braced argument.</cd:description>
<cd:examples><cd:example title=""><context source="yes">
\placeformula[formula:aformula]
\startformula
y=x^2
\stopformula
\placeformula
\startformula
\int_0^1 x^2 dx
\stopformula
</context>
</cd:example><cd:example title="Numbering tricks">If you wish to begin the numbering anew you can add \resetnumber before \placeformula:
<context source="yes">
\placeformula[formula:aformula]
\startformula
(x+y)^2 = x^2 + 2xy + y^2
\stopformula
\resetnumber[formula]
\placeformula
\startformula
\int_0^1 x^2 dx = {1 \over 3 }
\stopformula
</context>
If you wish to start the numbering at a certain number, say at 100, you can add \setnumber before \placeformula:
<context source="yes">
\setnumber[formula][100]
\placeformula[formula:aformula]
\startformula
(x + y) ^3 = x^3 + 3x^2y + 3xy^2 + y^3
\stopformula
\placeformula
\startformula
\int_0^1 x dx = {1 \over 2}
\stopformula
</context></cd:example></cd:examples>
<cd:notes></cd:notes>
<cd:seealso>
<cd:source file="strc-mat.mkiv" originator="system"></cd:source>
<cd:wikipage originator="system" page="Category:Mathematics"></cd:wikipage>
<cd:commandref name="startformula"></cd:commandref>
<cd:commandref name="resetnumber"></cd:commandref>
<cd:commandref name="setnumber"></cd:commandref></cd:seealso>
</cd:commandgroup>
<cd:shortdesc>The command <tt>\placeformula</tt> places a displayed math formula
</cd:shortdesc>
<cd:variants>
<cd:command category="mathematics" file="strc-mat.mkiv" interfacedate="2020-07-14T09:24" interfacefile="i-formula.xml" level="document" name="placeformula" variantnumber="1">
<cd:arguments>
<cd:keywords list="yes" optional="yes" ordinal="1">
<cd:keywordsdoc></cd:keywordsdoc>
<cd:constant type="+"></cd:constant>
<cd:constant type="-"></cd:constant>
<cd:constant type="cd:reference"></cd:constant>
</cd:keywords>
<cd:keywords delimiters="braces" optional="yes" ordinal="2">
<cd:keywordsdoc></cd:keywordsdoc>
<cd:constant type="cd:text"></cd:constant>
</cd:keywords>
</cd:arguments>
</cd:command>
</cd:variants>
<cd:description>Place a displayed math formula, including equation number.
The <code>text</code> argument is typically a <code>\startformula ... \stopformula </code> block instead of a literalb braced argument.</cd:description>
<cd:examples><cd:example title=""><context source="yes">
\placeformula[formula:aformula]
\startformula
y=x^2
\stopformula
\placeformula
\startformula
\int_0^1 x^2 dx
\stopformula
</context>
</cd:example><cd:example title="Numbering tricks">If you wish to begin the numbering anew you can add \resetnumber before \placeformula:
<context source="yes">
\placeformula[formula:aformula]
\startformula
(x+y)^2 = x^2 + 2xy + y^2
\stopformula
\resetnumber[formula]
\placeformula
\startformula
\int_0^1 x^2 dx = {1 \over 3 }
\stopformula
</context>
If you wish to start the numbering at a certain number, say at 100, you can add \setnumber before \placeformula:
<context source="yes">
\setnumber[formula][100]
\placeformula[formula:aformula]
\startformula
(x + y) ^3 = x^3 + 3x^2y + 3xy^2 + y^3
\stopformula
\placeformula
\startformula
\int_0^1 x dx = {1 \over 2}
\stopformula
</context></cd:example></cd:examples>
<cd:notes></cd:notes>
<cd:seealso>
<cd:source file="strc-mat.mkiv" originator="system"></cd:source>
<cd:wikipage originator="system" page="Category:Mathematics"></cd:wikipage>
<cd:commandref name="startformula"></cd:commandref>
<cd:commandref name="resetnumber"></cd:commandref>
<cd:commandref name="setnumber"></cd:commandref></cd:seealso>
</cd:commandgroup>
