Can someone explain..

K

kaebun

Junior Member
Joined
Sep 11, 2005
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135
how to do limits w/out using graphs, we are learning about the graphing of rational functions, and for the asymtotes you use the lim thing to see hich sides its on.. i preety much get that part but im still a little lost on the lim part ... if possible give a hard example or if you want i can give you one... because i can get it when its simple its just the difficult ones that throw me off....
heres an example.... f(x)= (x-1)/(x^2-x-12)
please solve showing all steps of possible
thanks in advance
 
What limit are you trying to find?

Please provide a clear statement of the entire exercise. Thank you.

Eliz.
 
any limit .. i just need to now how to do limit
howbout
lim f(x)=
x --> 4-
 
back to your first example...

if you are looking at the limits to see each side of the asymtotes, then you are looking at vaules a little bigger or smaller than the solution which causes a non defined result.
To make this clearer.....

y = 1/(x-2)

for this x =2 will produce a undefined answer ie (1/0) so if you wish to examine the graph or the trend of it then look at values less and more than x=2

So - you need to identify the x values where the asymtotes occur and this is your limit value ie as it approachs x=2 (for the above problem).
 
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