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http://functions.wolfram.com/12.06.16.0025.01
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Sign[Subscript[z, 1]/Subscript[z, 2]] == Sign[Subscript[z, 1]]/
Sign[Subscript[z, 2]]
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Cell[BoxData[RowBox[List[RowBox[List["Sign", "[", FractionBox[SubscriptBox["z", "1"], SubscriptBox["z", "2"]], "]"]], "\[Equal]", FractionBox[RowBox[List["Sign", "[", SubscriptBox["z", "1"], "]"]], RowBox[List["Sign", "[", SubscriptBox["z", "2"], "]"]]]]]]]
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<math xmlns='http://www.w3.org/1998/Math/MathML' mathematica:form='TraditionalForm' xmlns:mathematica='http://www.wolfram.com/XML/'> <semantics> <mrow> <mrow> <mi> sgn </mi> <mo> ⁢ </mo> <mrow> <mo> ( </mo> <mstyle maxsize='1'> <mfrac> <msub> <mi> z </mi> <mn> 1 </mn> </msub> <msub> <mi> z </mi> <mn> 2 </mn> </msub> </mfrac> </mstyle> <mo> ) </mo> </mrow> </mrow> <mo> ⩵ </mo> <mfrac> <mrow> <mi> sgn </mi> <mo> ⁡ </mo> <mo> ( </mo> <msub> <mi> z </mi> <mn> 1 </mn> </msub> <mo> ) </mo> </mrow> <mrow> <mi> sgn </mi> <mo> ⁡ </mo> <mo> ( </mo> <msub> <mi> z </mi> <mn> 2 </mn> </msub> <mo> ) </mo> </mrow> </mfrac> <mtext> </mtext> </mrow> <annotation-xml encoding='MathML-Content'> <apply> <eq /> <apply> <times /> <ci> sgn </ci> <apply> <times /> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 1 </cn> </apply> <apply> <power /> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 2 </cn> </apply> <cn type='integer'> -1 </cn> </apply> </apply> </apply> <apply> <times /> <apply> <ci> Sign </ci> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 1 </cn> </apply> </apply> <apply> <power /> <apply> <ci> Sign </ci> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 2 </cn> </apply> </apply> <cn type='integer'> -1 </cn> </apply> </apply> </apply> </annotation-xml> </semantics> </math>
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| Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["Sign", "[", FractionBox[SubscriptBox["z_", "1"], SubscriptBox["z_", "2"]], "]"]], "]"]], "\[RuleDelayed]", FractionBox[RowBox[List["Sign", "[", SubscriptBox["zz", "1"], "]"]], RowBox[List["Sign", "[", SubscriptBox["zz", "2"], "]"]]]]]]] |
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Date Added to functions.wolfram.com (modification date)
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