This is the proof for l'hopitals rule in my book:(adsbygoogle = window.adsbygoogle || []).push({});

http://bildr.no/view/953799

http://bildr.no/view/953800

http://bildr.no/view/999144

I dont get why they use the function F to make the proof? It is the saying from it with cauchy mean value theorem that makes the start for the proof but could they not manipulate any function to make this proof work, I mean it looks like they just made up F? And at the end of the proof I dont get why f(a)=g(a)=0

Hope someone could help me out:)

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Proof l'hopitals rule

Loading...

Similar Threads for Proof l'hopitals rule |
---|

B Function rules question |

B Proof of a limit rule |

B Proof of quotient rule using Leibniz differentials |

B Don't follow one small step in proof |

**Physics Forums | Science Articles, Homework Help, Discussion**