I see now.
On Friday, March 27, 2015 at 9:51:52 PM UTC+2, Aaron Meurer wrote:
>
> We need to just remove this automatic distribution of numbers. Until
> we do that, we will continue to have confusing behavior like this. See
> https://github.com/sympy/sympy/issues/4596 for more information.
>
>
We need to just remove this automatic distribution of numbers. Until
we do that, we will continue to have confusing behavior like this. See
https://github.com/sympy/sympy/issues/4596 for more information.
Aaron Meurer
On Fri, Mar 27, 2015 at 1:47 PM, Paul Royik wrote:
> This dosn't seem reasonab
This dosn't seem reasonable.
Expanding goes on the line Mul(*numer). Mul(*numer, evaluate=False) fixes
things.
On Friday, March 27, 2015 at 4:31:58 PM UTC+2, Chris Smith wrote:
>
> That seems reasonable since fraction is allowing the expr to rewrite:
>
> >>> 2*e
> 2*(x + 1)/(x - 1)
> >>> fraction
Isn't this just because the Mul evaluates itself. I don't think it's
actually fraction() that is rewriting things.
Aaron Meurer
On Fri, Mar 27, 2015 at 9:31 AM, Chris Smith wrote:
> That seems reasonable since fraction is allowing the expr to rewrite:
>
2*e
> 2*(x + 1)/(x - 1)
fraction
That seems reasonable since fraction is allowing the expr to rewrite:
>>> 2*e
2*(x + 1)/(x - 1)
>>> fraction(_)
(2*x + 2, x - 1)
On Friday, March 27, 2015 at 4:28:28 AM UTC-5, Paul Royik wrote:
>
> Both fraction and as_numer_denom return (2x+2, sin(x)+1) for expression
> 2(x+1)/(sin(x)+1), i.e.
Both fraction and as_numer_denom return (2x+2, sin(x)+1) for expression
2(x+1)/(sin(x)+1), i.e. they rewrite numerator and denominator.
I suggest simple fix for fraction: substitute last line return Mul(*numer),
Mul(*denom) with return Mul(*numer, evaluate=False), Mul(*denom,
evaluate=False)
For
It looks like fraction takes into account assumptions, but on the
other hand, it doesn't do any rewriting of the expression to combine
sums of fractions (e.g., fraction(1/x + 1/y) gives (1/x + 1/y, 1),
whereas (1/x + 1/y).as_numer_denom() gives (x + y, x*y)).
Aaron Meurer
On Thu, Mar 26, 2015 at
I used as_numer_denom earlier and now found fraction.
Is there any difference between them?
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