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September 9th, 2013, 03:31 PM   #1
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Calculus Limits

Lim x-> - infinity ((e^2x) -5)/ ((e^kx) +3)
What should k be for the limit to exist?

Hi can someone explain how to solve this to me? my teacher went through this in class but I just cant seem to understand what she's doing. Help!! :P
ChanThar is offline  
 
September 9th, 2013, 03:55 PM   #2
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Re: Calculus Limits

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Originally Posted by ChanThar
Lim x-> - infinity ((e^2x) -5)/ ((e^kx) +3)
What should k be for the limit to exist?

Hi can someone explain how to solve this to me? my teacher went through this in class but I just cant seem to understand what she's doing. Help!! :P
Since the form of the limit is , we can use L'Hopital's rule. We have

.

Can you continue?
eddybob123 is offline  
September 9th, 2013, 04:08 PM   #3
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Re: Calculus Limits

Oh yea i think I got it. I'll continue from there, thanks!
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