danielS Posted October 9, 2005 Share Posted October 9, 2005 Hi, my name is Daniel. I am in first semester calculus, and the teacher is very disorganized and skips sections whenever he cares to. Earlier in the semester he skipped the section on epsilon/delta limit proofs. By reading the book, I was able to understand the idea of finding d as a function of e such that for any e > 0, there is a corresponding e that satisfies |f(x)-L| < e if 0 |x-a| < d and that this refers to the distances on the f and x axes... The problem is not with my understanding of epsilon delta proofs, so much as it is the techniques that the book uses to proove them. It only has a few examples, and the techniques seem very diverse and random, with very little methodology. He is not going to include anything he skips on tests, but I don't like not knowing what I'm paying to learn. Can anybody help? Link to comment Share on other sites More sharing options...
Dave Posted October 9, 2005 Share Posted October 9, 2005 I know the feeling Epsilon-delta proofs don't really seem like proofs, but once you start playing around with some examples it gets a lot easier. If you post some examples on here, then I'll try and answer them as well as I can (same for others), but it's really hard to try and teach someone a complete subject through the internet. Link to comment Share on other sites More sharing options...
nfornick Posted October 17, 2005 Share Posted October 17, 2005 Can you try this? (x+3)/(x^2-3) as x -> infinity I know the feeling Epsilon-delta proofs don't really seem like proofs' date=' but once you start playing around with some examples it gets a lot easier. If you post some examples on here, then I'll try and answer them as well as I can (same for others), but it's really hard to try and teach someone a complete subject through the internet.[/quote'] Link to comment Share on other sites More sharing options...
Dave Posted October 17, 2005 Share Posted October 17, 2005 Using epsilon-delta? A much easier way is to prove the quotient rule Link to comment Share on other sites More sharing options...
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