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## #1 2007-07-04 10:01:26

MathsIsFun

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### Parabola and Ellipse

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

Parabola

Ellipse and Perimeter of Ellipse

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

## #2 2007-07-04 10:20:09

mikau
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### 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.

## #3 2007-07-05 09:12:16

mathsyperson
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### 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.

## #4 2007-07-05 10:10:07

MathsIsFun

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### 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

## #5 2007-07-05 15:14:08

MathsIsFun

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### 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

## #6 2007-07-18 05:18:56

bossk171
Power Member

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### Re: Parabola and Ellipse

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

## #7 2007-07-18 08:14:31

MathsIsFun

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### Re: Parabola and Ellipse

Good suggestion, thanks

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