Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,653

I have completed a page on Limits (Formal Definition)

I would value feedback (is it accurate? understandable?)

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

Erm, there seems to be a slight mistake with

I think you mean

Yeah?

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,653

Yeah, I said that wrong.

I was trying to explain why we need to add that δ must be greater than 0 ... how to express that nicely?

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**Zhylliolom****Real Member**- Registered: 2005-09-05
- Posts: 412

Just say under step 2 "there exists δ > 0!"

I would recommend changing step 1 right before it to "it is true for any ε > 0" so the reader knows ε is positive as well.

Then for step 3 Jane's recommendation would work.

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,653

Updated the page ... is it better/right ?

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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