.MCAD 310000000 \  docDocument MmcObject[TT  dim_formatTmasslengthtimecharge temperature luminosity substanceNumericalFormatQdii  shpRectV4mcDocumentObjectState\ mcPageModelK????mcHeaderFooterI@I |P CHeaderFooterJ@l{\rtf1\ansi\deff0\deflang1033{\fonttbl{\f0\fswiss\fprq15 Arial;}} \viewkind4\uc1\pard\f0\fs18\{d\}\par } @{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fswiss\fprq15\fcharset0 Arial;}{\f1\fswiss\fprq15 Arial;}} \viewkind4\uc1\pard\qc\f0\fs18 Essentlals\f1\par } @{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fswiss\fprq15\fcharset0 Arial;}{\f1\fswiss\fprq15 Arial;}} \viewkind4\uc1\pard\qr\f0\fs18 Boolean \f1\{n\}\par } @J@{\rtf1\ansi\deff0\deftab720{\fonttbl{\f0\fswiss MS Sans Serif;}{\f1\froman\fcharset2 Symbol;}{\f2\fnil\fprq15 Arial;}{\f3\fswiss Arial;}{\f4\fswiss\fprq15 Arial;}} {\colortbl\red0\green0\blue0;} \deflang1033\pard\plain\f4\fs18 \par } @{\rtf1\ansi\deff0\deftab720{\fonttbl{\f0\fswiss MS Sans Serif;}{\f1\froman\fcharset2 Symbol;}{\f2\fnil\fprq15 Arial;}{\f3\fswiss Arial;}{\f4\fswiss\fprq15 Arial;}} {\colortbl\red0\green0\blue0;} \deflang1033\pard\qc\plain\f3\fs20 \par } @{\rtf1\ansi\deff0\deftab720{\fonttbl{\f0\fswiss MS Sans Serif;}{\f1\froman\fcharset2 Symbol;}{\f2\fnil\fprq15 Arial;}{\f3\fswiss Arial;}{\f4\fswiss\fprq15 Arial;}} {\colortbl\red0\green0\blue0;} \deflang1033\pard\qr\plain\f4\fs18 \par } @J@J MbP?MbP? TextState? TextStyle>@ ArialSerial_ParPropDefaultWNormal>@Arial@W Heading 1>@ Arial@W Heading 2>@ Arial@W Heading 3 >@ Arial@W Paragraph >@ Arial@WList >@ Arial@WIndent >@Times New Roman@W Title >@Times New Roman@W Subtitle font_style_listO font_styleP  VariablesTimes New Roman@P  ConstantsTimes New Roman@P TextArial@P Greek VariablesSymbol@P User 1Arial@P User 2 Courier New@P User 3Arial@P User 4Times New Roman@P User 5Times New Roman@P User 6Arial@P User 7Times New Roman@P SymbolsSymbol@P Current Selection FontArial@P Undefined Font@P HeaderArial@P FooterArial@P Rotated Math FontTimes New Roman  TextRegion* docRegionGshpBoxUJB CharacterMap-RangeMap;Boolean functions and If( , , ) ChrPropMap7 ParPropMap9 RangeElem< ParPropData: RangeData=@WEmbedMap1<LinkMap/<LinkData0@ Heading 1Arial*@U#=c085@5@-AfImportant typing hint for if( , , ): First type if() then put the cursor between the parentheses and type two commas to create: if( , , ). Then fill in the spaces between the commas. For any function of one or more variables, it is best to follow the function name with both parentheses at the outset. Unclosed parentheses are often a source of problems. 7 $f<$ ChrPropData8mArial<8@@81?@B@Ut @@@@ p@A@@ @@@B@@d@Ax@C@@@A@D@@ @@C@E@@K@@D@F@@@E5@G@@K@D@H@@@G4.5@I@@@C5@J*@U9-@KThe value of the function is zero if x < 0, and is otherwise 1. Note that: 7K9K@K@@@A=A?@@@A>A@@@tA?2AA@@KA?AB@@AA1AC@@A>AD@@@ACAE@@ACAF@@A=AG@@dAFyAH@@pAFAI@@AHxAJ@@ABcc-In each example:79A<A:@W1A</A<A0@NormalArial A@B@UL]X?A@@ pA@@AA@@@AA@@dAyA@@pAA@@A0A@@AA@@+@A@XA@@AA@B@UL%]X@A@@ pA@@AA@@@AA@@dAyA@@pAA@@A1A@@AA@@+@A@XA@@AA@B@UHL}]fXDA@@ pA@@AA@@@AA@@dAyA@@pAA@@A2A@@AA@@+@A@XA@@A