The problem is not to conduct the proof but how the proof works. (It seems to be a circular argument)(adsbygoogle = window.adsbygoogle || []).push({});

Please use laymans english to explain, thank you

**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!

# Help with formal definition of the limit of a function

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