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Cos




Mathematica Notation

Traditional Notation









Elementary Functions > Cos[z] > Specific values > Values at fixed points





http://functions.wolfram.com/01.07.03.0102.01









  


  








Input Form





Cos[(13 Pi)/10] == Root[5 - 20 #1^2 + 16 #1^4 & , 2]








Standard Form





Cell[BoxData[RowBox[List[RowBox[List["Cos", "[", FractionBox[RowBox[List["13", " ", "\[Pi]"]], "10"], "]"]], "\[Equal]", RowBox[List["Root", "[", RowBox[List[RowBox[List[RowBox[List["5", "-", RowBox[List["20", " ", SuperscriptBox["#1", "2"]]], "+", RowBox[List["16", " ", SuperscriptBox["#1", "4"]]]]], "&"]], ",", "2"]], "]"]]]]]]








MathML Form







<math xmlns='http://www.w3.org/1998/Math/MathML' mathematica:form='TraditionalForm' xmlns:mathematica='http://www.wolfram.com/XML/'> <semantics> <mrow> <mrow> <mi> cos </mi> <mo> &#8289; </mo> <mo> ( </mo> <mfrac> <mrow> <mn> 13 </mn> <mo> &#8290; </mo> <mi> &#960; </mi> </mrow> <mn> 10 </mn> </mfrac> <mo> ) </mo> </mrow> <mo> &#10869; </mo> <msubsup> <mrow> <mo> ( </mo> <mrow> <mi> z </mi> <mo> ; </mo> <mrow> <mrow> <mn> 16 </mn> <mo> &#8290; </mo> <msup> <mi> z </mi> <mn> 4 </mn> </msup> </mrow> <mo> - </mo> <mrow> <mn> 20 </mn> <mo> &#8290; </mo> <msup> <mi> z </mi> <mn> 2 </mn> </msup> </mrow> <mo> + </mo> <mn> 5 </mn> </mrow> </mrow> <mo> ) </mo> </mrow> <mn> 2 </mn> <mrow> <mo> - </mo> <mn> 1 </mn> </mrow> </msubsup> </mrow> <annotation-xml encoding='MathML-Content'> <apply> <eq /> <apply> <cos /> <apply> <times /> <cn type='integer'> 13 </cn> <pi /> <apply> <power /> <cn type='integer'> 10 </cn> <cn type='integer'> -1 </cn> </apply> </apply> </apply> <apply> <power /> <apply> <ci> Subscript </ci> <apply> <ci> CompoundExpression </ci> <ci> z </ci> <apply> <plus /> <apply> <times /> <cn type='integer'> 16 </cn> <apply> <power /> <ci> z </ci> <cn type='integer'> 4 </cn> </apply> </apply> <apply> <times /> <cn type='integer'> -1 </cn> <apply> <times /> <cn type='integer'> 20 </cn> <apply> <power /> <ci> z </ci> <cn type='integer'> 2 </cn> </apply> </apply> </apply> <cn type='integer'> 5 </cn> </apply> </apply> <cn type='integer'> 2 </cn> </apply> <cn type='integer'> -1 </cn> </apply> </apply> </annotation-xml> </semantics> </math>










Rule Form





Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["Cos", "[", FractionBox[RowBox[List["13", " ", "\[Pi]"]], "10"], "]"]], "]"]], "\[RuleDelayed]", RowBox[List["Root", "[", RowBox[List[RowBox[List[RowBox[List["5", "-", RowBox[List["20", " ", SuperscriptBox["#1", "2"]]], "+", RowBox[List["16", " ", SuperscriptBox["#1", "4"]]]]], "&"]], ",", "2"]], "]"]]]]]]


Date Added to functions.wolfram.com (modification date)





2001-10-29