Re: Incompletely simplified Square root.
- To: mathgroup at smc.vnet.net
- Subject: [mg121065] Re: Incompletely simplified Square root.
- From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
- Date: Fri, 26 Aug 2011 05:22:16 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <201108251104.HAA24880@smc.vnet.net>
On 25 Aug 2011, at 13:04, paulvonhippel at yahoo wrote: > Can someone tell me why the following input doesn't produce an output > of 0.68....? > Why is the output under the radical? Thanks! > > In[574]:= Sqrt[\!\(\* > TagBox[ > FractionBox["926", "2025"], > PolynomialForm]\)] // N > > Out[574]= Sqrt[\!\(\* > TagBox["0.45728395061728394`", > PolynomialForm]\)] > Because PolynomialForm[926/2025] is not a number so you can't extract a square root of it or even perform any arithmetical operations on it. For example, try 1 + PolynomialForm[926/2025]. The same will be true with any other "Forms", e.g. 1 + InputForm[1] InputForm[1] + 1 You have obviously misunderstood what these wrappers are. Also, why are you using PolynomialForm in this way, anyway, it's obviously not doing anything useful? Andrzej Kozlowski
- References:
- Incompletely simplified Square root.
- From: paulvonhippel at yahoo <paulvonhippel@yahoo.com>
- Incompletely simplified Square root.