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

You are not logged in.

- Topics: Active | Unanswered

**dford****Member**- Registered: 2013-12-06
- Posts: 4

7√ π ^3

Not sure how to type all the math stuff but basically..

7th root of pi to the 3rd.

I have no idea why, but this equation has been stuck in my head for months.

Offline

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,120

hi Don

Is this your dream?

Doesn't ring any bells for me but maybe you have stumbled upon a new and significant constant. Let's call it dford's constant.

The 'math stuff' is called Latex. Have a look at

http://www.mathisfunforum.com/viewtopic.php?id=4397

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline

**dford****Member**- Registered: 2013-12-06
- Posts: 4

Yep that was my dream. If it turns out to mean something I'd be happy.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,665

Hi dford;

Does that number come out of a problem you were working on?

To 14 decimal places the ancient Egyptians would represent that as:

**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.**

**Online**

**Maiya****Member**- Registered: 2011-08-11
- Posts: 124

Hello everyone

why would anyone use such constant upto 14 decimal places........??

And what is that series called....??

Offline

**Maiya****Member**- Registered: 2011-08-11
- Posts: 124

And just as dford i'm stuck with

e^(i*pi)+1=0.......

Does anyone know what is that supposed to mean........???

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,840

Hi Maiya

That is just an equality that many people find intriguing because it connects 5 major constants in math: e,pi,i,1 and 0.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,665

And what is that series called....??

That is called an Egyptian fraction.

**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.**

**Online**

**Maiya****Member**- Registered: 2011-08-11
- Posts: 124

Hello anonimnstefy....

how did someone end up with such an equality??

I mean i've tried it many times but i never got that equation right........

I could never compute e^i......

And can anyone put some sense into that equation....

Offline

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,120

hi Maiya

It comes from complex number theory.

A number of the form

means it has an 'argument' of theta measured anticlockwise from the positive x axis.

Using this

http://en.wikipedia.org/wiki/Argand_diagram

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline

**Maiya****Member**- Registered: 2011-08-11
- Posts: 124

oh ya right.......exactly....

e^(i*pi)=cos(pi)+i sin(pi)....

why didn't i think of this before....

thank you bob....

Offline

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,120

link in edited post

B

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline