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One way to find a vertical asymptote is to take the inverse of the given function and evaluate its limit as x tends to infinity.

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14y ago

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What is the vertical asymptote of 4 divided by x2?

2


True or False if a rational function Rx has exactly one vertical asymptote then the function 3Rx should have the exact same asymptote?

It will have the same asymptote. One can derive a vertical asymptote from the denominator of a function. There is an asymptote at a value of x where the denominator equals 0. Therefore the 3 would go in the numerator when distributed and would have no effect as to where the vertical asymptote lies. So that would be true.


Can the graph of a polynomial function have a vertical asymptote?

no


What did the derivative near the horizontal asymptote shout to the derivative near the vertical asymptote?

I don't know, what?


Why doesn't a rational function not need at least one vertical asymptote?

That is not correct. A rational function may, or may not, have a vertical asymptote. (Also, better don't write questions with double negatives - some may find them confusing.)


Is it true that the function has a vertical asymptote at every x value where its numerator is zero and you can make a table for each vertical asymptote to find out what happens to the function there?

Every function has a vertical asymptote at every values that don't belong to the domain of the function. After you find those values you have to study the value of the limit in that point and if the result is infinite, then you have an vertical asymptote in that value


When a vertical asymptote is reflected over the x axis what does it become?

It remains a vertical asymptote. Instead on going towards y = + infinity it will go towards y = - infinity and conversely.


Why doesnt the graph of a rational function cross its vertical asymptote?

It can.


Can the graph of a function have a point on a vertical asymptote?

No. The fact that it is an asymptote implies that the value is never attained. The graph can me made to go as close as you like to the asymptote but it can ever ever take the asymptotic value.


All rational functions have more than one vertical asymptote?

false


Some rational functions have more than one vertical asymptote?

yes


If a function has a vertical asymptote at a certain x-value then the function is at that value?

Undefined