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**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 333

Find &Y and dy

Y^2 =x^2-1 when x changes from 3 to 3.02 question ends... plese solve it

And

What is differentIate between &y and dy

*Last edited by Zeeshan 01 (2016-09-22 19:00:55)*

Math !!!!.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,664

What does &Y mean?

**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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**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 333

delta y

Math !!!!.

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**thickhead****Member**- Registered: 2016-04-16
- Posts: 1,018

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**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 333

Yup!!

Can u explain it I have also key book also but I want explaination

Difference betw dy and delta y

Math !!!!.

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**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 333

Why you put x=3......

Math !!!!.

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**thickhead****Member**- Registered: 2016-04-16
- Posts: 1,018

I won't answer any more questions on this.

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**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 333

Why ?

Math !!!!.

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Zeeshan 01 wrote:

Why you put x=3......

Zeeshan 01 wrote:

Find &Y and dy

Y^2 =x^2-1 when xchanges from 3 to 3.02question ends... plese solve it

And

What is differentIate between &y and dy

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,664

Hi;

thickhead: If you do not want to answer a post that is your choice. But when you do try to remember that you are talking to a human being and a member of this forum as you are. Posting smilies back at people to taunt or ridicule ( I removed it ) can hurt someone's feelings. Please do not do that anymore.

Zeeshan 01 wrote:

Difference betw dy and delta y

Delta y,

is the change in y over any interval. dy is the change in y over an infinitesimal interval.**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: 1,018

Hi Zeeshan,

I am sorry if you have been offended. I had every reason to believe you were pulling my leg.You only had given me the value of x=3 ,not chosen by me.

In addition taking dx=0.02 does not confirm to its being infinitesimal. So that may not be what is expected.

*Last edited by thickhead (2016-09-23 00:33:28)*

**{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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**Zeeshan 01****Member**- Registered: 2016-07-22
- Posts: 333

Why delta y approximately equal to dy ant prove

Math !!!!.

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