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 JacobiDN

 http://functions.wolfram.com/09.29.27.0008.01

 Input Form

 JacobiDN[z, m]^2 == (1 - m + JacobiCS[z, m]^2)/(1 + JacobiCS[z, m]^2)

 Standard Form

 Cell[BoxData[RowBox[List[SuperscriptBox[RowBox[List["JacobiDN", "[", RowBox[List["z", ",", "m"]], "]"]], "2"], "\[Equal]", FractionBox[RowBox[List["1", "-", "m", "+", SuperscriptBox[RowBox[List["JacobiCS", "[", RowBox[List["z", ",", "m"]], "]"]], "2"]]], RowBox[List["1", "+", SuperscriptBox[RowBox[List["JacobiCS", "[", RowBox[List["z", ",", "m"]], "]"]], "2"]]]]]]]]

 MathML Form

 dn ( z m ) 2 cs ( z m ) 2 - m + 1 cs ( z m ) 2 + 1 JacobiDN z m 2 JacobiCS z m 2 -1 m 1 JacobiCS z m 2 1 -1 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", SuperscriptBox[RowBox[List["JacobiDN", "[", RowBox[List["z_", ",", "m_"]], "]"]], "2"], "]"]], "\[RuleDelayed]", FractionBox[RowBox[List["1", "-", "m", "+", SuperscriptBox[RowBox[List["JacobiCS", "[", RowBox[List["z", ",", "m"]], "]"]], "2"]]], RowBox[List["1", "+", SuperscriptBox[RowBox[List["JacobiCS", "[", RowBox[List["z", ",", "m"]], "]"]], "2"]]]]]]]]

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

 2001-10-29