Peyton Bland <(E-Mail Removed)> wrote:

> Hi,

>

> I'm coming to the party a bit late, but you guys are scaring me, so I

> had to reply (!)...
That being the case, you might want to spend some more time explaining

what it is you are trying to say. It is hard to just pick up a thread

after 3 months.

> In article <20050904211634.239$(E-Mail Removed)>, <(E-Mail Removed)>

> wrote:

>

> > Ignoramus14363 <ignoramus14363@NOSPAM.14363.invalid> wrote:

> > > On 03 Sep 2005 22:51:13 GMT, (E-Mail Removed) <(E-Mail Removed)>

> > > wrote:

> > > > Ignoramus14363 <ignoramus14363@NOSPAM.14363.invalid> wrote:

> > > >> I wrote one

> > > >>

> > > >> http://www.algebra.com/services/rend...simplifier.mpl

> > > >>

> > > >> Besides simplifying, it shows work and plots math formulas. It is

> > > >> not available publicly though.

> > > >

> > > > Also, it doesn't give the right answer.

> > > >

> > > > "Text form: ((x^2-6x+9)/(x^2-3x-10))/((x^2-5x+6)/(x^2-8x+15))

> > > > simplifies to (x-3)/(x+2)"

> > > >

> > > > No, it doesn't.

> > >

> > > I will appreciate corrections and suggestions. What's the right

> > > answer there?

> >

> > I didn't solve it fully; I just set x to zero which was enough to show

> > the simplification was wrong.

>

> I did this, too, and got -1 when x = 0. What did you get, Xho?
Well, for the original full form, I got -9/4. For the original incorrect

simplification I got -3/2. For the correct simplification I got

(obviously) -9/4. For your new incorrect simplification I got -1.

>

> > It appears that the correct answer is (x-3)^2/(x-2)/(x+2). It seem

> > like your program realizes that (x-3) is a common factor in two of the

> > quadratic groups, but then "cancels out" both of those groups in their

> > entirety, rather than just the factor of x-3.

>

> Have another look...
Are you trying to tell me to double check my work, or are you telling me

that the bug has been fixed and I should go look at the original web page

again?

> I get (x+2)/(x-2) .
Which is obiously wrong, as (setting x=0) -9/4 != -1.

> Hopefully, no one coerced

> the software in question to yield any of these other answers given

> earlier.
I have no idea what that means.

Xho

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