If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Proof by contradiction theorem

sheeba7 · 2012-05-23 21:23:55

Could somebody please post the entire proof by contradiction theorem , project maths question 6A.:rolleyes:

23-05-2012 10:23pm

#1

sheeba7

Registered Users Posts: 64 ✭✭

Join Date: July 2011

Posts: 25

Could somebody please post the entire proof by contradiction theorem , project maths question 6A.:rolleyes:

0

Comments

#2 23-05-2012 10:28pm

Canard

Registered Users, Registered Users 2 Posts: 8,572 ✭✭✭

Join Date: December 2008

Posts: 8503

Theres one in the back of the Edco exam papers, but I dont understand it.

http://www.youtube.com/watch?v=jCZnEdqeDtw I like this one though, its pretty snazzy

0
#3 23-05-2012 10:31pm

FaoiSin

Registered Users Posts: 789 ✭✭✭

Join Date: February 2012

Posts: 761

Patchy~ wrote: »

Theres one in the back of the Edco exam papers, but I dont understand it.

http://www.youtube.com/watch?v=jCZnEdqeDtw I like this one though, its pretty snazzy

O.O

0
#4 23-05-2012 10:35pm

Canard

Registered Users, Registered Users 2 Posts: 8,572 ✭✭✭

Join Date: December 2008

Posts: 8503

I dont get the theorems used, but hey, no one said we had to explain those too :cool:

0
#5 23-05-2012 11:06pm

Neodymium

Registered Users Posts: 179 ✭✭

Join Date: April 2011

Posts: 160

Proof by contradicion that the square root of 2 is an irrational number is not explained very well at the back of the edco exam papers. I've attached the method which I use below, hope it helps.

0