L'hopital's rule confusion

  • Thread starter Lucy Yeats
  • Start date
  • #1
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Main Question or Discussion Point

I understand the use of this rule for the limit as x goes to 0, but not for the limit as x goes to infinity. Can this rule be used to find limits to infinity? How?

I have googled this but couldn't find a good explanation.
 

Answers and Replies

  • #2
AlephZero
Science Advisor
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You can substitute u =1/x, and find the limit as u goes to 0.
 
  • #3
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Thanks!
 

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