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 JacobiCD

 http://functions.wolfram.com/09.25.27.0026.01

 Input Form

 JacobiCD[z, m]^2 == Cos[JacobiAmplitude[z, m]]^2/ (1 - m Sin[JacobiAmplitude[z, m]]^2)

 Standard Form

 Cell[BoxData[RowBox[List[SuperscriptBox[RowBox[List["JacobiCD", "[", RowBox[List["z", ",", "m"]], "]"]], "2"], "\[Equal]", FractionBox[SuperscriptBox[RowBox[List["Cos", "[", RowBox[List["JacobiAmplitude", "[", RowBox[List["z", ",", "m"]], "]"]], "]"]], "2"], RowBox[List["1", "-", RowBox[List["m", " ", SuperscriptBox[RowBox[List["Sin", "[", RowBox[List["JacobiAmplitude", "[", RowBox[List["z", ",", "m"]], "]"]], "]"]], "2"]]]]]]]]]]

 MathML Form

 cd ( z m ) 2 cos 2 ( am ( z m ) ) 1 - m sin 2 ( am ( z m ) ) JacobiCD z m 2 JacobiAmplitude z m 2 1 -1 m JacobiAmplitude z m 2 -1 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", SuperscriptBox[RowBox[List["JacobiCD", "[", RowBox[List["z_", ",", "m_"]], "]"]], "2"], "]"]], "\[RuleDelayed]", FractionBox[SuperscriptBox[RowBox[List["Cos", "[", RowBox[List["JacobiAmplitude", "[", RowBox[List["z", ",", "m"]], "]"]], "]"]], "2"], RowBox[List["1", "-", RowBox[List["m", " ", SuperscriptBox[RowBox[List["Sin", "[", RowBox[List["JacobiAmplitude", "[", RowBox[List["z", ",", "m"]], "]"]], "]"]], "2"]]]]]]]]]]

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

 2007-05-02