| Discussion: | Roundtable |
| Topic: | "Graphing Calculator" Software |
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| Subject: | Epsilon-Delta Applet |
| Author: | Gene |
| Date: | Sep 6 2003 |
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(This program may not yet be in Math Tools, but it will be shortly.)
My last shot at the definition of limit.
This is a nice visual presentation of the makings of the epsilon-delta
definition of limit which allows users to get a visceral feel for what's going
on, moving a cursor to find a delta to match a given epsilon.
I particularly like the companion applet you get by clicking on "Launch
EpsilonDelta?". It has a pull-down menu at the top and the last three examples
have no limits. I asked the students to write down what they can conclude from
those examples. The correct conclusion: THE GIVEN L IS NOT THE LIMIT. You still
have to show that NO L could be the limit.
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