Groups > comp.soft-sys.math.maple > #863

Re: sqrt(1/sin(alpha))

Subject	Re: sqrt(1/sin(alpha))
From	"G. A. Edgar" <edgar@math.ohio-state.edu.invalid>
Newsgroups	comp.soft-sys.math.maple
Message-ID	<010320140625332981%edgar@math.ohio-state.edu.invalid> (permalink)
References	<5311ce00$0$3647$426a74cc@news.free.fr>
Organization	Ohio State Univ
Date	2014-03-01 06:25 -0700

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In article <5311ce00$0$3647$426a74cc@news.free.fr>, Jerome BENOIT
<g6299304p@rezozer.net> wrote:

> Hello List,
> 
> so far I cannot figure out how to (simplify|convert) 
> 
> sqrt(1/sin(alpha));
> 
> into
> 
> 1/sqrt(sin(alpha));
> 
> 
> Any idea ?
> 
> Thanks in advance,
> Jerome

Maple does not do that "simplification" because it is wrong (for
complex values).  If you like you can tell Maple more information:

u:=sqrt(1/sin(alpha));
simplify(u) assuming sin(alpha)>0;

-- 
G. A. Edgar                              http://www.math.ohio-state.edu/~edgar/

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sqrt(1/sin(alpha)) Jerome BENOIT <g6299304p@rezozer.net> - 2014-03-01 13:09 +0100
  Re: sqrt(1/sin(alpha)) "G. A. Edgar" <edgar@math.ohio-state.edu.invalid> - 2014-03-01 06:25 -0700
    Re: sqrt(1/sin(alpha)) "G. A. Edgar" <edgar@math.ohio-state.edu.invalid> - 2014-03-01 06:34 -0700
      Re: sqrt(1/sin(alpha)) William Unruh <unruh@invalid.ca> - 2014-03-01 16:49 +0000
        Re: sqrt(1/sin(alpha)) fateman@gmail.com - 2014-03-10 07:57 -0700

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