Difference between revisions of "Documentation/FAQ/Formula"

Latest revision as of 13:12, 8 October 2021

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A useful first resource is the OpenOffice Math Syntax Reference.

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@@ Line 1: / Line 1: @@
-{{DISPLAYTITLE:{{OOo}} Math FAQ}}__NOTOC__{{Documentation/FAQTOC}}{{Documentation/Note| A useful first resource is the '''[[Documentation/Reference/Math_commands|OpenOffice Math Syntax Reference]]'''.}}
+{{DISPLAYTITLE:{{AOo}} Math FAQ}}__NOTOC__{{Documentation/FAQTOC}}{{Note| A useful first resource is the '''[[Documentation/Reference/Math_commands|OpenOffice Math Syntax Reference]]'''.}}
+Search the FAQs: <googlefaq/>
 This list is ordered by popularity. The most popular FAQs are at the top. But also have a look at the bottom to find any new entries.
@@ Line 25: / Line 25: @@
 '''Instructions'''
 * Do '''not ask questions''' here, but '''give answers'''.
-* If you have a '''question to ask''', go to the [http://user.services.openoffice.org User Forum].
+* If you have a '''question to ask''', go to the [https://forum.openoffice.org/en/forum/ User Forum].
 * Replace ''<FAQ_TITLE>'' part in the input box above by the title you would like to give the FAQ item and click '''Add New FAQ'''
 </div>
-==I enter <font color="brown">'''x^*'''</font> to typeset x<SUP>*</SUP>, but get an error message. Why?==
-The problem is that<font color="brown">''' * '''</font>is a binary operator, that is
-there has to be an expression on both sides of the symbol.
-You either have to enter the expression<font color="brown">''' x^{{}*{}} '''</font>to avoid the
-error message, or you could type <font color="brown">''' x^"*"'''</font> as well, where the quotes
-will interprete the asterisk not as a binary operator but as a "standalone" symbol.
-If you use this construction a lot you might want to define the
-symbol as a userdefined symbol. See [[FAQ:Formula#I_need_a_symbol_that_Math_does_not_provide._What_can_I_do.3F|I need a symbol that Math does not provide. What can I do?]].
-If you have defined the * as a userdefined symbol, say<font color="brown">''' %ast'''</font>,
-you can enter<font color="brown">''' x^%ast'''</font>.
-This answer applies to a lot of other symbols as well. Some operators, such as +, are unary, that is there only has to be an expression to the right of the symbol. To typeset x<SUP>+</SUP> you can enter<font color="brown">''' x^{+{}}<'''</font> or, of course, <font color="brown">'''x^"+"'''</font>.
-==When I enter one of the symbols '''<font color="brown">#</font>,<font color="brown"> &amp;</font> ,<font color="brown">|</font>,<font color="brown">^</font>''' or <font color="brown">'''_'''</font> I get an unexpected result or an error message. How can I use these symbols?==
-These symbols all have a special meaning in ''Math'':
-*The symbol<font color="brown">''' # '''</font>is used in stacks and matrices.
-*The symbols<font color="brown">''' &amp; '''</font>and<font color="brown">''' | '''</font>are used for logical and and logical or.
-*The symbols<font color="brown">''' ^ '''</font>and<font color="brown">''' _ '''</font>are used for subscripts and superscripts.
-To use them in your formula you can put them in quotation marks,
-which means that you insert them as text.
-If you want to use the symbol &quot;|&quot; you should consider
-whether the construction you need is one of the the following:
-*<font color="brown">'''a divides b '''</font>is used to typeset a| b.
-*<font color="brown">'''abs a '''</font>is used to typeset |a|.
-==When I enter<font color="brown">''' 3xy '''</font>the number 3 comes out in italics. Is this a bug?==
-Not really. What happens here is, that Math uses multi-letter
-variables, which are common in some disciplines, like economics. The
-rule is that a variable consists of a sequence of letters, numbers
-and dots (the first character can not be a dot).
-So when you enter 3xy this is considered a variable - and
-variables are typeset in italics. The only odd thing here is, that a
-variable can start with a number.
-The correct way to enter the expression if you mean 3 times x
-times y is<font color="brown">''' 3 x y '''</font>(with spaces between the characters).
-==I want to use a binary operator (like <font color="brown">'''union'''</font> or<font color="brown"> '''otimes'''</font>) as a large operator (like <font color="brown">'''int'''</font> or <font color="brown">'''sum'''</font>). How can I do that?==
-You have to define the symbol you want to use as a user-defined
-symbol first. See <A HREF="012.html">FAQ #012</A> for instructions;
-most of the symbols used by ''Math'' are part of the StarMath
-font.
-Let's say you have defined the union symbol as the user-defined
-symbol <font color="brown">'''%union'''</font>. You can then enter for example
-<pre>oper%union from i in I A_i</pre>
-in order to typeset the formula
-[[Image:006a.gif]]
-<em>Note</em>: In build 633 this doesn't work if there is a space before
-<font color="brown">'''%union'''</font> (this is a bug in the parser).
-<P>Any user-defined symbol can be used as a large operator if it is
-preceded with<font color="brown">''' oper '''</font>as in the example.</P>
 [[Category: Documentation/FAQ]]
 [[Category:User FAQ]]

Difference between revisions of "Documentation/FAQ/Formula"

Latest revision as of 13:12, 8 October 2021

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