Re: Undefined function question...


"." <.@.com> wrote in message
news:431137fa$0$30673$5a62ac22@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hi All,
>
> If I have a function: f(x) = X^2 + 10/(X-2)
>
> and X is 2, the second part of the equation is undefined, correct?

Correct.

> If I want to find the maximum domain and range of the function, how do I
> handle this?

Well, it seems pretty clear that the function can be defined for any x
except x=2, so the domain will be ...

With that domain, what are the allowable values of the function (the range)?
Have you tried graphing it?

What happens to the value of the function as x goes from (say) one million
to 2.00001? How about as it goes from 1.99999 to minus one million?

> Do I just ignore the undefined section because of the defined component?
>

a + b where b is undefined is undefined, if that helps.


> Thanks for your help.
>
> Michael
>


.

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