[sage-support] Re: Newb basic algebra question

2009-07-15 Thread Doug
> > sage: foo = (x-1)^2/(x+2)^2 + 2*(x-1)/(x+2) > > sage: bar = foo*(x+2) > > sage: bar > > (x + 2)*((x - 1)^2/(x + 2)^2 + 2*(x - 1)/(x + 2)) > > > How come (x+2) isn't canceling in each of the parts? > > Probably because x might be -2. Also, you have to explicitly simplify   > to do any non-trivi

[sage-support] Re: Newb basic algebra question

2009-07-14 Thread Robert Bradshaw
On Jul 14, 2009, at 9:18 AM, Doug wrote: > Hi all; I'm brand new to sage and am finding it really fun and > useful. Thanks. > Of course, I don't know anyone else who uses it and thus need > to rely on the general community when reading documentation and > scratching my head leave me with open q

[sage-support] Re: Newb basic algebra question

2009-07-14 Thread Harald Schilly
On Jul 14, 6:18 pm, Doug wrote: > Hi all; I'm brand new to sage and am finding it really fun and > useful. Great, welcome in the Sage family ;) > Any help would be much appreciated! > That's simply a matter of automatic simplification. Your more complex term with the sum is just not covered b