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## #1 2011-08-26 18:04:36

pisquared
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### Cool Function

I've found a cool function: -|x|^(-|x|)
This function goes in waves over and under the point 0 of the X acces. If you go towards the negative or positive part of the X access the waves get smaller and it looks like in the end it'll be a straight line but it will only get smaller and smaller.

How many times can you subtract 7 from 83, and what is left afterwards?  You can subtract it as many times as you want, and it leaves 76 every time.  ~Author Unknown

## #2 2011-08-26 18:29:02

bobbym

Online

### Re: Cool Function

Hi pisquared;

What did you graph it with?

In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.

## #3 2011-08-26 20:42:05

pisquared
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### Re: Cool Function

I sketched it in a notebook with a pen.
You probably expected me to tell you a name of a computer programme lol...

How many times can you subtract 7 from 83, and what is left afterwards?  You can subtract it as many times as you want, and it leaves 76 every time.  ~Author Unknown

## #4 2011-08-26 20:48:59

bobbym

Online

### Re: Cool Function

Hi;

Hand methods can be misleading because they cannot sample enough points.

In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.

## #5 2011-08-26 21:15:04

pisquared
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### Re: Cool Function

I know, but I couldn't find a programme that doesn't cost money or actually works with the small details.
Maybe you can recommend one?

Last edited by pisquared (2011-08-26 21:16:19)

How many times can you subtract 7 from 83, and what is left afterwards?  You can subtract it as many times as you want, and it leaves 76 every time.  ~Author Unknown

## #6 2011-08-26 21:26:45

bobbym

Online

### Re: Cool Function

Hi;

Try geogebra.

In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.

## #7 2011-08-26 21:52:43

anonimnystefy
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### Re: Cool Function

here is the graph that wolfram gives:
http://www.wolframalpha.com/input/?i=pl … %28x%29%29

Last edited by anonimnystefy (2011-08-26 21:54:30)

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón

## #8 2011-08-26 22:23:39

MathsIsFun

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### Re: Cool Function

Plot of -abs(x)^(-abs(x))

Or put -abs(x)^(-abs(x))-y into: Equation Grapher

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

## #9 2011-08-26 23:16:59

pisquared
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### Re: Cool Function

Thanks alot everyone!

How many times can you subtract 7 from 83, and what is left afterwards?  You can subtract it as many times as you want, and it leaves 76 every time.  ~Author Unknown

## #10 2011-08-27 02:39:50

bobbym

Online

### Re: Cool Function

Hi pisquared;

That function is actually rather well behaved. It is easy to numerically integrate it.

In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.

## #11 2011-08-27 11:01:42

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### Re: Cool Function

#### pisquared wrote:

"...over and under the point 0 of the

X acces
.
If you go towards the negative or positive part of the
X access
..."

Signature line:

I wish a had a more interesting signature line.

## #12 2011-08-27 14:16:19

pisquared
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### Re: Cool Function

Sorry, I live in Israel and barely know English.

How many times can you subtract 7 from 83, and what is left afterwards?  You can subtract it as many times as you want, and it leaves 76 every time.  ~Author Unknown

## #13 2011-08-27 15:01:37

bobbym

Online

### Re: Cool Function

Hi pisquared;

That is okay, your English is rather good.

In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.

## #14 2011-08-27 22:22:21

pisquared
Member

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### Re: Cool Function

How many times can you subtract 7 from 83, and what is left afterwards?  You can subtract it as many times as you want, and it leaves 76 every time.  ~Author Unknown

## #15 2011-08-29 06:50:54

benice
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### Re: Cool Function

#### pisquared wrote:

I've found a cool function: -|x|^(-|x|)

Hi pisquared,

You are so sick! Me too!

My Gallery of Math Art: benice equation

## #16 2011-08-29 06:52:48

bobbym

Online

### Re: Cool Function

Hi;

Looks like a hamburger! A delicious one!

In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.

## #17 2011-08-29 07:31:32

benice
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### Re: Cool Function

#### bobbym wrote:

Hi;

Looks like a hamburger! A delicious one!

Hi,

The boundary curve is a superellipse: (x/4)^4 + (y/3)^4 = 1.

My Gallery of Math Art: benice equation

## #18 2011-08-29 07:39:37

bobbym

Online

### Re: Cool Function

Hi benice;

Thanks for the info. A superellipse? I never heard of that.
What is it?

In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.

## #19 2011-08-29 13:10:16

pisquared
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### Re: Cool Function

Hey benice,
Wow! What programme did you use?

and bobbym,
I agree, it looks like a pink delicious hamburger!

How many times can you subtract 7 from 83, and what is left afterwards?  You can subtract it as many times as you want, and it leaves 76 every time.  ~Author Unknown

## #20 2011-08-29 16:01:49

bobbym

Online

### Re: Cool Function

Hi pisquared;

Yes, perhaps a little on the rare side but there is an easy fix for that!

Hi benice;

Did not notice the link to the superellipse page.
Thanks for providing that.

In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.

## #21 2011-08-30 08:04:26

benice
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### Re: Cool Function

#### pisquared wrote:

Hey benice,
Wow! What programme did you use?

My Gallery of Math Art: benice equation