Congratulations! you found the flaw.
I've always taught that "cancelling" is a dirty word and should not be used.
Too many teachers use that word and what they should be saying is that we
"divide" both sides by x - y (or whatever they are dividing by)
----- Original Message -----
From: "ForenSys" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, July 30, 2001 6:06 PM
Subject: Re: RBDos 6.5++ LASTKEY function seems faulty
> > (x-y) (x+y) = y(x-y)
>
> Of course, you can't divide both sides by (x-y) because x-y=0 and you
can't
> divide by zero.
>
> BUT, if TOLERANCE is set greater than or equal to 1, then 1=2 in RBase.
>
> Regards,
>
> Stephen Markson
> ForenSys The Forensic Systems Group
> www.ForensicSystemsGroup.com
> 416 482 2140
>
> ----- Original Message -----
> From: "Bernard Lis" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Sunday, July 29, 2001 3:15 PM
> Subject: Re: RBDos 6.5++ LASTKEY function seems faulty
>
>
> > I can't resist this -- your while 2 > 1 reminded me that 2 is really
> > equal to 1. Proof follows:
> >
> > x=1 y=1 therefore x = y
> > multiplying both sides by x gives
> > x(2) = xy that's read as x squared
> > subtracting y(2) from both sides we get
> > x(2) - y(2) = xy - y(2)
> > factoring: difference of 2 squares and common factor
> > (x-y) (x+y) = y(x-y)
> > canceling x-y on both sides we get:
> > x + y = y or
> > 2 = 1
> >
> > Yours truly,
> > Bernie Lis
>
>
