[sage-support] Re: simple 'solve' error, possibly related to ecl and maxima installation

2014-11-23 Thread Robert Dodier
On 2014-11-23, kcrisman  wrote:

> See http://trac.sagemath.org/ticket/17375 for some possible details on why 
> if this thread hasn't said so.  Anyway, hopefully we'll have a quick update 
> so that Maxima works correctly whether or not you have a compiler available.

I'm working on it, for the record.

best

Robert Dodier

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[sage-support] Re: Why solve(5^( x -1) == (0.04)^(2*x), x) returns empty set?

2014-11-23 Thread Chris Seberino


On Wednesday, November 19, 2014 8:48:07 AM UTC-6, Jakob Kroeker wrote:
>
>
> Even if it is expectable that in some cases (which?) solve may not return 
> all solutions, it should be explicitly pointed out;
> Especially it should be stated that an empty list does not necessarily 
> imply there are no solutions.
>
> Yes!  Actually adding something like the following would be an 
improvement

if (answer == []) and not_sure_there_are_no_solutions:
print question
else:
print answer

I heard Emmanuel's warning that the not_sure_there_are_no_solutions boolean 
may be hard to calculate in some cases.

In my opinion, not_sure_there_are_no_solutions should default to True 
unless it is a case where
we can with certaintly set not_sure_there_are_no_solutions = False.



Other opinions? If everybody agrees, I will open a ticket.
>

Please do!  Thanks! 
 

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