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Topic: Is (t^2-9)/(t-3) defined at t=3?
Replies: 166   Last Post: Oct 30, 2013 9:41 AM

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Virgil

Posts: 7,025
Registered: 1/6/11
Re: Is (t^2-9)/(t-3) defined at t=3?
Posted: Sep 29, 2013 9:31 PM
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In article <scadnQfj0LimP9XPnZ2dnUVZ_t2dnZ2d@megapath.net>,
Hetware <hattons@speakyeasy.net> wrote:

> On 9/29/2013 3:14 PM, quasi wrote:
>

> > Bottom line:
> >
> > The concept of function evaluation is _direct_ _substitution_.

>
> That is certainly not contained in any definition of /function/ I'm
> familiar with. A real valued function of real numbers is a set of
> ordered pairs of real numbers. The first number is often referred to as
> a member of the domain, whereas the second as a member of the range.
>
> Can this equation be solved for t?
>
> (t^2-9)/(t-3) = 6


Note that the equation (t^2-9)/(t-3) = 6
and the equation (t^2-9) = 6*(x-3)
are NOT equivalent unless one requires that x =/= 3.

Standard algebraic notation requires that the in evaluation of
'(t^2-9)/(t-3)', the numerator and denominator both be evaluated
separately before the division can be performed.
--




Date Subject Author
9/28/13
Read Is (t^2-9)/(t-3) defined at t=3?
Hetware
9/28/13
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Michael F. Stemper
9/28/13
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scattered
9/28/13
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Hetware
9/28/13
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quasi
9/28/13
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Hetware
9/28/13
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quasi
9/28/13
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Peter Percival
9/29/13
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quasi
9/28/13
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Hetware
9/28/13
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Richard Tobin
9/28/13
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Hetware
9/28/13
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tommyrjensen@gmail.com
9/29/13
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Hetware
10/6/13
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Hetware
10/6/13
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Peter Percival
10/6/13
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Hetware
10/6/13
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quasi
10/8/13
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quasi
10/7/13
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Peter Percival
9/29/13
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Michael F. Stemper
9/29/13
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Hetware
9/29/13
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quasi
9/29/13
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Hetware
9/29/13
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magidin@math.berkeley.edu
10/6/13
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Hetware
10/6/13
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magidin@math.berkeley.edu
10/7/13
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Hetware
10/7/13
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LudovicoVan
10/7/13
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Peter Percival
10/8/13
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magidin@math.berkeley.edu
10/12/13
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Hetware
10/12/13
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fom
10/13/13
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magidin@math.berkeley.edu
10/13/13
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Richard Tobin
10/13/13
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Hetware
10/13/13
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Peter Percival
10/13/13
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fom
10/13/13
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magidin@math.berkeley.edu
10/13/13
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magidin@math.berkeley.edu
10/8/13
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quasi
10/8/13
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magidin@math.berkeley.edu
10/8/13
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quasi
10/8/13
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quasi
10/12/13
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Hetware
10/13/13
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quasi
10/13/13
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Peter Percival
10/9/13
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magidin@math.berkeley.edu
10/9/13
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fom
10/10/13
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magidin@math.berkeley.edu
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fom
10/7/13
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Peter Percival
10/7/13
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Hetware
10/7/13
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fom
10/7/13
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Peter Percival
9/29/13
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quasi
9/30/13
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Peter Percival
9/30/13
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Peter Percival
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Peter Percival
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RGVickson@shaw.ca
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Roland Franzius
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9/28/13
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Hetware
9/29/13
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Peter Percival
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Virgil
9/29/13
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quasi
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Virgil
9/29/13
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Hetware
9/29/13
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quasi
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Hetware
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LudovicoVan
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quasi
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Virgil
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magidin@math.berkeley.edu
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9/30/13
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Hetware
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10/6/13
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Hetware
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Peter Percival
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magidin@math.berkeley.edu
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Ciekaw
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Virgil
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LudovicoVan
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Hetware
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10/8/13
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Hetware
10/9/13
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10/9/13
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10/8/13
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Hetware
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Virgil
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Hetware
10/9/13
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magidin@math.berkeley.edu
10/9/13
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Peter Percival
10/10/13
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Ciekaw
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10/10/13
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Tim Golden BandTech.com
10/13/13
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Hetware
10/13/13
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10/13/13
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Hetware
10/14/13
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Peter Percival
10/13/13
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Hetware
10/13/13
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fom
10/13/13
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Hetware
10/13/13
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fom
10/14/13
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fom
10/14/13
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Hetware
10/14/13
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magidin@math.berkeley.edu
10/14/13
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magidin@math.berkeley.edu
10/14/13
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Peter Percival
10/14/13
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Hetware
10/14/13
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quasi
10/16/13
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@less@ndro
10/16/13
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quasi
10/19/13
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Hetware
10/19/13
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quasi
10/19/13
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Hetware
10/20/13
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fom
10/20/13
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quasi
10/20/13
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Hetware
10/20/13
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fom
10/20/13
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Hetware
10/20/13
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Peter Percival
10/20/13
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Richard Tobin
10/20/13
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Hetware
10/30/13
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@less@ndro
10/19/13
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Hetware
10/10/13
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Ronald Benedik
10/10/13
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Peter Percival
10/10/13
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Virgil
10/18/13
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Hetware
10/19/13
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Peter Percival
10/19/13
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fom
10/19/13
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Peter Percival
10/19/13
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Hetware
10/19/13
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Peter Percival
10/19/13
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Hetware
10/19/13
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fom
10/19/13
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magidin@math.berkeley.edu
10/19/13
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Hetware
10/19/13
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magidin@math.berkeley.edu
10/20/13
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Hetware
10/20/13
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quasi
10/20/13
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quasi
10/20/13
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Hetware
10/20/13
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Peter Percival
10/20/13
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magidin@math.berkeley.edu
10/20/13
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Hetware
10/20/13
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Arturo Magidin
10/20/13
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Hetware
10/20/13
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magidin@math.berkeley.edu
10/19/13
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fom

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