John L.

asked • 03/03/14

Please name where the vertical asymptote are as well as any horizontal ones as well. Also write where the removable discontinuities are.

f(x)= (x-2)(x-1) ÷ (x-2)2(x-1)
 
Please name where the vertical asymptote are as well as any horizontal ones as well. Also write where the removable discontinuities are. 

1 Expert Answer

By:

Lowell C. answered • 03/04/14

Tutor
4.9 (7)

Experienced tutor for Math, Science, and Test Preparation

John L.

But why is there not one a r.d at 2. Wouldn't that make the denominator zero as well?
Report

03/04/14

Philip P.

Yes, there is a discontinuity at x=2, but it isn't removable.  The two x-1 terms cancel (and are thus removed).  You can remove one of the x-2 terms in the denominator but not the other, so the discontinuity remains.
Report

03/04/14

Lowell C.

John,
 
As Philip noted, a discontinuity in a function is only removable if the term in the function that caused the discontinuity can be canceled.  Another way to look at it is that a vertical asymptote, such as the one at x=2 in this case, is a discontinuity that cannot be removed.
Report

03/04/14

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.