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**Derivative**

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**Johnathon bresly****Guest**

What is derivative test?please explain

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 84,766

Hi;

If you mean the first derivative test then if you have not read the wikipedia page please go here.

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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**Johnathon bresly****Guest**

Does there exist any 2nd derivative test?

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 84,766

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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**Derivative**