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## #1 2007-07-03 12:01:26

MathsIsFun
Registered: 2005-01-21
Posts: 7,664

### Parabola and Ellipse

I have been a little Geometric of late, and have produced:

Parabola

Conic Sections (those images took over a day, using PovRay)

I hope you all enjoy reading, and I would also value a critical mathematical eye to correct any mistakes (I am only human!)

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

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## #2 2007-07-03 12:20:09

mikau
Member
Registered: 2005-08-22
Posts: 1,504

### Re: Parabola and Ellipse

I like it! The conic sections are awesome, and i never knew that ellipse perimeter couldn't be solved with integration. Very cool!

A logarithm is just a misspelled algorithm.

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## #3 2007-07-04 11:12:16

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

### Re: Parabola and Ellipse

Ooh, these look very interesting. Some of the most advanced pages you've done, particularly the one on the perimeter of an ellipse. I can't see any mistakes though, although that could be because some of it's over my head.

For example, what on Earth are half-integer factorials all about?

Why did the vector cross the road?
It wanted to be normal.

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## #4 2007-07-04 12:10:07

MathsIsFun
Registered: 2005-01-21
Posts: 7,664

### Re: Parabola and Ellipse

(1/2)! etc, the Gamma function deals with them. Very interesting subject, and I hope (one day) to write a page about it

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

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## #5 2007-07-04 17:14:08

MathsIsFun
Registered: 2005-01-21
Posts: 7,664

### Re: Parabola and Ellipse

I added a small section about it to the end of the page on Factorial Function !

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

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## #6 2007-07-17 07:18:56

bossk171
Member
Registered: 2007-07-16
Posts: 305

### Re: Parabola and Ellipse

What about the latus rectum?

There are 10 types of people in the world, those who understand binary, those who don't, and those who can use induction.

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## #7 2007-07-17 10:14:31

MathsIsFun
Registered: 2005-01-21
Posts: 7,664

### Re: Parabola and Ellipse

Good suggestion, thanks

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

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