Added less formal defn for PCC, fixed xref

[CVollet]

No description provided.

[Alex-Jordan]

Subject to more discussion, I'm going to remove the extra less formal definition for a limit. At PCC, I think this section would just be skipped. It's hard to see what good the rest of the section is (exercises, examples) to a student who is relying on the less formal definition. How about reviewing the intro section and seeing if an informal definition could go there? Or writing an entirely new section with its own examples and exercises based on an informal definition. We could call it section 1.2′ :)

[CVollet]

Can you keep what I wrote somewhere for further use? The problem is that
the next section (1.3) mentions what was done in 1.2, so it makes less
sense from a readers perspective if you skip that section. I think most
people at least try to make some passing mention of epsilon-deltas.

On Mon, Sep 12, 2016 at 11:47 PM, Alex Jordan notifications@github.com
wrote:

Subject to more discussion, I'm going to remove the extra less formal
definition for a limit. At PCC, I think this section would just be skipped.
It's hard to see what good the rest of the section is (exercises, examples)
to a student who is relying on the less formal definition. How about
reviewing the intro section and seeing if an informal definition could go
there? Or writing an entirely new section with its own examples and
exercises based on an informal definition. We could call it section 1.2′ :)

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Carly Vollet
Mathematics Instructor
Math Department Co-Chair
Math Club Faculty Advisor
PCC Cascade, SSB 321
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[Alex-Jordan]

Yes, it's eternally saved in this commit now. There are ways to access it from your command line, but the simplest thing may be just to visit this pull request thread on GitHub, and view how the file changed.