Ask your own question, for FREE!
Mathematics 16 Online
OpenStudy (anonymous):

find the limit and identify any vertical asymptotes the function.

OpenStudy (anonymous):

OpenStudy (anonymous):

looks impossible to me.

OpenStudy (ivancsc1996):

Jajaja, its hard. You just need to expand the (x-10). Do you know how to?

OpenStudy (anonymous):

yes!

OpenStudy (anonymous):

(x-10)(x-10)?

OpenStudy (ivancsc1996):

Expand it and plug o=x

OpenStudy (anonymous):

(10-10)(10-10) = 0?

OpenStudy (ivancsc1996):

No, \[x ^{2}-20+100\]

OpenStudy (anonymous):

Observe the following after I substitute x = 10:\[\bf \lim_{x \rightarrow 10}1=\frac{ 1 }{ (x-10)^2 }=\frac{1}{(10-10)^2}=\frac{1}{0}=\infty\]This also implies that x = 10 is the vertical asymptote. @kjuchiha

OpenStudy (anonymous):

Sorry i wrote the limit incorrectly. the equal sign and 1 in the beginning are not supposed to be there lol.

OpenStudy (anonymous):

So holy... the limit is infinity?

OpenStudy (ivancsc1996):

sorry, \[\frac{ 1 }{ x ^{2}-20x+100 }\]

OpenStudy (anonymous):

yup

OpenStudy (ivancsc1996):

No, Plug in x onto the formula I gave

OpenStudy (anonymous):

100-2000 + 100 = 1/2000

OpenStudy (ivancsc1996):

O no it doesnt work!

OpenStudy (ivancsc1996):

Yeah, I think we should graph it!

OpenStudy (jhannybean):

The limit is infinity whereas the vertical asymptote is x=10.

OpenStudy (ivancsc1996):

Yeah, it goes to infinity

OpenStudy (anonymous):

Whenever you get\[\bf \frac{ x }{ 0 }, \ x >0\] after the substitution, the function approaches positive infinity at that x-value. Whenever we have:\[\bf \frac{ x }{ 0 }, \ x < 0\] after the substitution, the function approaches negative infinity at that x-value. And if we get 0/0, then that's an indeterminate form and we must tackle the limit differently. @kjuchiha

OpenStudy (anonymous):

anything over 0 = infinity?

OpenStudy (anonymous):

I see!!

OpenStudy (anonymous):

Thank you all so so much. I finally get to go to sleep.

OpenStudy (anonymous):

Night all

OpenStudy (anonymous):

sweet dreams. i hope you see me bowling and getting a hat trick in your dreams.

OpenStudy (anonymous):

LOL you're crazy

OpenStudy (anonymous):

g'night lmao!

OpenStudy (jhannybean):

Here is a graph |dw:1371958838064:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!