Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Curricula » Investigations Other Topics

Topic: fun discussion
Replies: 6   Last Post: Jun 21, 2011 7:16 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
teachercuong@yahoo.com

Posts: 1
Registered: 11/27/07
Re: fun discussion
Posted: Jun 21, 2011 7:12 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

To:Kelsey Coleman
1.999999~ = x
19.99999~ = 10x
19.99999~ - 1.999999~ = 10x - x
18 = 9x
x = 18/9=2

So Yes.

This methos is correct only if 1.999~ is supposed to be a real number.
In fact, it is a limit
1.999~ = limit of 1.99999 (n times of 9) as n approaches infinity


Message was edited by: teachercuong@yahoo.com



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.