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September 4th, 2008, 07:54 PM
|  | Math Engineering Student | | Join Date: Mar 2007 Location: Santiago
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| |  For those that never learnt well the epsilon-delta proofs
I attach a paper based in how to prove limits by definition, pretty nice.
Hope it helps. | | The Following 38 Users Say Thank You to Krizalid For This Useful Post: | 11rdc11, Abu-Khalil, Amer, amro05, arbolis, Aryth, bkarpuz, bmp05, Chop Suey, Chris L T521, darachit, deubelte, elizsimca, Freaky-Person, Jhevon, john doe, Jojo123, kalagota, kbzoon, Khaali91, Kimmy2, MAX09, Ment, Paperwings, paupsers, pickslides, Pinkk, Prove It, Rebesques, Reckoner, RockHard, SteveI, sukhi, thelostchild, TurboMan2, Twig, TWiX, Zarathustra |  |
September 4th, 2008, 08:30 PM
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Thanks both my teacher at the high school and university level for some reason never thought this was important and just went directly to limits and derivatives without teaching the proofs. |
October 2nd, 2008, 06:46 PM
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LOL THANK YOU! my teacher was unclear about this... |
November 30th, 2008, 06:51 PM
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Never has it been more clear...thank you so much. Now the definition of a limit in 3-D makes so much more sense. You are a saint for posting this! SO useful! |
February 9th, 2009, 01:00 AM
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jajaj Krizalid thank you very much, as always, excellent input.  |
February 9th, 2009, 03:34 AM
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here's something for practice: using  method, directly prove that: calculus 1: if  is a polynomial, then  calculus 2: if  is a polynomial, then  | | The following users thank NonCommAlg for this useful post: | | |
February 23rd, 2009, 07:03 PM
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Quote:
Originally Posted by 11rdc11  Thanks both my teacher at the high school and university level for some reason never thought this was important and just went directly to limits and derivatives without teaching the proofs. | Student's eye glaze over when I mention this.
Plus books are dropping it, so don't blame your professors.
All books are becoming more and more watered down.
Some schools don't even teach trig substitution and I see hyperbolics are disappearing too...
Zill's DE book used to have lots of problems with cosh and sinh and now it hardly has any.
That stuff is really handy in DE. |
August 17th, 2009, 04:41 PM
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If anyone is interested I have a few rigorous limit examples with animations on my web site for both epsilon-delta proofs and the epsilon-M proofs if you will for limits at infinity Calculus 1
They are rougly in the middle of the page as I start with an intuitive approach leading up the roigorous definitions | | The Following 2 Users Say Thank You to Calculus26 For This Useful Post: | | | | Thread Tools | | | | Display Modes |  Linear Mode | 
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