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 JacobiCN

 http://functions.wolfram.com/09.26.27.0005.01

 Input Form

 JacobiCN[z, m]^2 == ((m - 1) JacobiCD[z, m]^2)/(m JacobiCD[z, m]^2 - 1)

 Standard Form

 Cell[BoxData[RowBox[List[SuperscriptBox[RowBox[List["JacobiCN", "[", RowBox[List["z", ",", "m"]], "]"]], "2"], "\[Equal]", FractionBox[RowBox[List[RowBox[List["(", RowBox[List["m", "-", "1"]], ")"]], " ", SuperscriptBox[RowBox[List["JacobiCD", "[", RowBox[List["z", ",", "m"]], "]"]], "2"]]], RowBox[List[RowBox[List["m", " ", SuperscriptBox[RowBox[List["JacobiCD", "[", RowBox[List["z", ",", "m"]], "]"]], "2"]]], "-", "1"]]]]]]]

 MathML Form

 cn ( z m ) 2 ( m - 1 ) cd ( z m ) 2 m cd ( z m ) 2 - 1 JacobiCN z m 2 m -1 JacobiCD z m 2 m JacobiCD z m 2 -1 -1 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", SuperscriptBox[RowBox[List["JacobiCN", "[", RowBox[List["z_", ",", "m_"]], "]"]], "2"], "]"]], "\[RuleDelayed]", FractionBox[RowBox[List[RowBox[List["(", RowBox[List["m", "-", "1"]], ")"]], " ", SuperscriptBox[RowBox[List["JacobiCD", "[", RowBox[List["z", ",", "m"]], "]"]], "2"]]], RowBox[List[RowBox[List["m", " ", SuperscriptBox[RowBox[List["JacobiCD", "[", RowBox[List["z", ",", "m"]], "]"]], "2"]]], "-", "1"]]]]]]]

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

 2001-10-29