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Limit X--->0

 
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May14-10, 03:33 PM   #1
 

Limit X--->0


1. The problem statement, all variables and given/known data

Limit X--->0 x2/x

2. Relevant equations

L'hospitals rule. y=eln(y)

3. The attempt at a solution

I tried using the theory that works for limit x---> 0 xx = 1. But I end up getting limit x---> 0 e2/x = infinity. How should I set up l'hospitals law?
 
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May14-10, 03:59 PM   #2

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You don't need (and can't use) l'Hopital if the limit isn't indeterminant. If you look at ln(x^(2/x)) how does it behave?
 
May14-10, 04:21 PM   #3
 
As x approaches 0+, ln(x) approaches negative infinity while 2/x approaches 0. I'm confused.
 
May14-10, 04:27 PM   #4

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Limit X--->0


Quote by Hockeystar View Post
As x approaches 0+, ln(x) approaches negative infinity while 2/x approaches 0. I'm confused.
I would say as x->0+ 2/x approaches +infinity. (-infinity)*(+infinity) doesn't look indeterminant to me.
 
May14-10, 04:50 PM   #5
 
Ah thanks I always mix up lim x to infinity and x to 0. So u get e^(-infinity) = 0
 
May14-10, 04:55 PM   #6

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Quote by Hockeystar View Post
Ah thanks I always mix up lim x to infinity and x to 0. So u get e^(-infinity) = 0
Right!
 
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