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: 7,654

A new page: Partial Derivatives

Comments / suggestions welcome.

"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;

∂ is called "del" or "dee" or "curly dee"

I did not know that, I just called them partial y, partial x etc.

All the examples check out, nice page!

**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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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,057

Hi MathsIsFun,

This is a neat page. Thanks.

I feel Euler's chain rule may be included.

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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**thickhead****Member**- Registered: 2016-04-16
- Posts: 1,077

Some people used to call it "daabaa" like "daabaa y by daabaa x'

**{1}Vasudhaiva Kutumakam.{The whole Universe is a family.}(2)Yatra naaryasthu poojyanthe Ramanthe tatra Devataha{Gods rejoice at those places where ladies are respected.}**

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

Hi;

Why?

**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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**thickhead****Member**- Registered: 2016-04-16
- Posts: 1,077

No reason why.

**{1}Vasudhaiva Kutumakam.{The whole Universe is a family.}(2)Yatra naaryasthu poojyanthe Ramanthe tatra Devataha{Gods rejoice at those places where ladies are respected.}**

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

Does that name mean something?

**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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**thickhead****Member**- Registered: 2016-04-16
- Posts: 1,077

Daabaa is roadside eating place but it has no connection.

**{1}Vasudhaiva Kutumakam.{The whole Universe is a family.}(2)Yatra naaryasthu poojyanthe Ramanthe tatra Devataha{Gods rejoice at those places where ladies are respected.}**

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

Hi;

Okay, thanks.

**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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**iamaditya****Member**- From: Planet Mars
- Registered: 2016-11-15
- Posts: 659

Hi, thickhead are you talking of dhabaa which we commonly call in our Indian language?

Practice makes a man perfect.

There is no substitute to hard work

All of us do not have equal talents but everybody has equal oppurtunities to build their talents.-APJ Abdul Kalam

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**thickhead****Member**- Registered: 2016-04-16
- Posts: 1,077

Yes, something similar but the pronunciation is clearly "d" but not "dh" associated with it.

(2)Yatra naaryasthu poojyanthe Ramanthe tatra Devataha

{Gods rejoice at those places where ladies are respected.}

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**iamaditya****Member**- From: Planet Mars
- Registered: 2016-11-15
- Posts: 659

From which state you are?

Practice makes a man perfect.

There is no substitute to hard work

All of us do not have equal talents but everybody has equal oppurtunities to build their talents.-APJ Abdul Kalam

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**thickhead****Member**- Registered: 2016-04-16
- Posts: 1,077

I am originally from Karnataka, now staying in Thane ,Maharashtra.

(2)Yatra naaryasthu poojyanthe Ramanthe tatra Devataha

{Gods rejoice at those places where ladies are respected.}

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,654

Thanks everyone!

I have also heard "day", so they say "day-f day-x" but that doesn't seem common.

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

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**iamaditya****Member**- From: Planet Mars
- Registered: 2016-11-15
- Posts: 659

I am originally from Karnataka, now staying in Thane ,Maharashtra.

Oh, thickhead that means you are Kanadda, right. Are you from Bangalore?

Practice makes a man perfect.

There is no substitute to hard work

All of us do not have equal talents but everybody has equal oppurtunities to build their talents.-APJ Abdul Kalam

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**thickhead****Member**- Registered: 2016-04-16
- Posts: 1,077

Not from Bengaluru but from Kumta of Karwar district.

*Last edited by thickhead (2017-06-19 21:41:49)*

(2)Yatra naaryasthu poojyanthe Ramanthe tatra Devataha

{Gods rejoice at those places where ladies are respected.}

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