So far, all I understand is that the definition proves that there's a value of f(x,y) as f(x,y) approaches (x(adsbygoogle = window.adsbygoogle || []).push({}); _{0},y_{0}) which is sufficiently close to but not exactly the value at f(x_{0},y_{0}). I am probably completely off... but I just don't understand the purpose of proving this. I also don't understand the purpose of the ε and the δ... which is pretty much the whole definition. Please help! D:

**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!

# Epsilon Delta Definition of Limit

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