Re: simplify

From	William Unruh <unruh@invalid.ca>
Newsgroups	comp.soft-sys.math.maple
Subject	Re: simplify
Date	2017-08-15 14:42 +0000
Organization	A noiseless patient Spider
Message-ID	<omv19e$3is$3@dont-email.me> (permalink)
References	<omg0fv$u3k$1@dont-email.me> <110820170417192973%edgar@math.ohio-state.edu.invalid> <omk215$7rm$1@dont-email.me> <150820170636106738%edgar@math.ohio-state.edu.invalid>

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On 2017-08-15, G. A. Edgar <edgar@math.ohio-state.edu.invalid> wrote:
> In article <omk215$7rm$1@dont-email.me>, William Unruh
><unruh@invalid.ca> wrote:
>
>> On 2017-08-11, G. A. Edgar <edgar@math.ohio-state.edu.invalid> wrote:
>> >
>> > Why not give us an example where you get this message?
>> >
>>    >simplify(sqrt((1-2*m(u)/R(u))*R(u)^4));
>>     Error, (in simplify) invalid input: `simplify/sqrt/product` uses a 2nd
>>       argument, n, which is missing
>> 
>> In the sequence of calculations I an doing, stuff like this can occor
>> all the time.
>> 
>
> In Maple 2015 I get...
>
>> simplify(sqrt((1-2*m(u)/R(u))*R(u)^4));
>
> (-(-R(u)+2*m(u))*R(u)^3)^(1/2)
>

So, it looks like it is bug introduced into 2016.2 (maybe earlier).

>> version();
>
>  User Interface: 1097895
>          Kernel: 1097895
>         Library: 1097895
>                             1097895
>
> Let's see what happens in other versions.

I get
version();
 User Interface: 1194701
 Kernel: 1194701
 Library: 1194701

>

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Thread

simplify William Unruh <unruh@invalid.ca> - 2017-08-09 21:57 +0000
  Re: simplify "G. A. Edgar" <edgar@math.ohio-state.edu.invalid> - 2017-08-11 04:17 -0600
    Re: simplify William Unruh <unruh@invalid.ca> - 2017-08-11 10:48 +0000
      Re: simplify "G. A. Edgar" <edgar@math.ohio-state.edu.invalid> - 2017-08-15 06:36 -0600
        Re: simplify William Unruh <unruh@invalid.ca> - 2017-08-15 14:42 +0000
          Re: simplify jfh <john.harper@vuw.ac.nz> - 2017-08-16 19:30 -0700
          Re: simplify Solved William Unruh <unruh@invalid.ca> - 2017-08-18 14:55 +0000

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