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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,684

Just finished this page: Arc Length (Calculus)

Comments, suggestions please

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

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**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606

Hi;

Δyi/Δxi approaches the derivative of the function f’(x):

Would it be better to say the derivative of f(x)?

Nice example using the catenary.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,684

Oh yeah, that is kind of scrambled, thanks.

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,816

Hi MathsIsFun,

Neat diagrams and illustrations. Thanks.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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Looks good. The Blackadder reference made me smile.

**LearnMathsFree: Videos on various topics.New: Integration Problem | Adding FractionsPopular: Continued Fractions | Metric Spaces | Duality**

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,684

"As cunning as a fox who's just been appointed Professor of Cunning at Oxford University?"

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

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