On Sep 28, 11:09 am, Johannes <dajo.m...@web.de> wrote:
> I'm wondering about on more little thing:
> I have an expression like this:
> (-bc)/((1/b -1) bc -1) + c /((1/b -1) bc -1) + (-1)/((1/b -1) bc -1) -1
> which could be simplified by hand to (-2(bc +1)/(c-bc -1)
> why do i get this complex expression, evne if I call simplify on it?
> maybe this question is related to the one of Aidan too (
> 'simplifying expressions')
>
> greatz Johannes
You need to try harder to simplify...
sage: var('b c')
(b, c)
sage: expr = (-b*c)/((1/b -1)* b*c -1) + c /((1/b -1)* b*c -1) + (-1)/
((1/b -1)* b*c -1) + c /((1/b -1)* b*c -1) + (-1)/((1/b -1)* b*c -1)
-1
sage: expr.simplify [hit tab]
expr.simplify expr.simplify_full
expr.simplify_rational
expr.simplify_exp expr.simplify_log expr.simplify_trig
expr.simplify_factorial expr.simplify_radical
sage: sage: expr.simplify_rational()
0
(or if you have no good guess, you can also try simplify_full)
cheers,
Yann
--
To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from this group, send email to
sage-support+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/sage-support
URL: http://www.sagemath.org
