Lacrima Castle
HelpSearchMembersCalendar

Welcome Guest ( Log In | Register )

> The Math Thread
Enzd
post Apr 13 2011, 09:34 PM
Post #1


NNNNNYAN
*********

Group: Knights
Posts: 870
Joined: 17-January 06
Member No.: 45



I don't use it, but some do. SO PUT IT HERE.

This post has been edited by Enzd: Apr 13 2011, 09:35 PM


~~~
"Where the hell have you been?! Didn't you get my messages?"
"Sorry, I was being raped in prison."
"You shouldn't be out enjoying yourself when you've got work to do."


User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
Reply to this topicStart new topic
Replies
Elnendil
post Apr 20 2011, 01:19 PM
Post #2


Talkative
****

Group: Arcs
Posts: 154
Joined: 23-December 05
From: DEM STATES
Member No.: 6



Maybe I just had a bad day, I dunno.

Looking over some geometric proofs, one of them is discussing some constructable number, sqrt(4+sqrt(7+sqrt(2))). The proof that such a number is irrational I thought was clever. First you prove that the square root of 2 is irrational. Then you have r equal that number and simply solve for the square root of 2, assuming that r is a rational number. You find a contradiction there.

The geometric one is to show that a collapsing compass is mathematically equivalent to the modern compass by proving that you can copy circles using only a collapsing compass, something it cannot easily do unlike the modern compass. You use radii of circles as triangle side lengths and show that many triangles are congruent, and thus their angles are congruent. A bit time consuming but clever.

This post has been edited by Elnendil: Apr 23 2011, 02:24 PM


~~~
QUOTE
Kenji: Where else would I could get beaten with a phone that would make me unable to remember it? The ass?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post



Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Lo-Fi Version Time is now: 10th January 2025 - 08:48 PM