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 » Education » math-teach

Topic: My comments on "traditional" algorithms
Replies: 27   Last Post: Apr 13, 2000 9:25 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Ted Alper

Posts: 118
Registered: 12/6/04
Re: My comments on "traditional" algorithms
Posted: Apr 6, 2000 3:18 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

What I should have said before going to the calculator was...

1.5245 is something like 1 and 2/3 percent bigger than 1.5
so if I have 1.5% compounded interest for 20 compunding periods,
how much is that?

old rule of thumb -- from interest rate calculations --
doubling time for k% interest is
about 70/k. so 70/(5/3) = 42.

This means 20 periouds should have about sqrt(2) error....
40%. And indeed, (1.5245)^20 is about 40% greater than 1.5^20.

OK, I could have used logs and the approximation
ln(1+x) ~ x for x near 0.
or the first terms of the taylor series
or the binomial expansion.


Ted Alper




Date Subject Author
3/31/00
Read My comments on "traditional" algorithms
Karen Dee Michalowicz
3/31/00
Read Re: My comments on "traditional" algorithms
MATH4FOBIX@aol.com
4/1/00
Read Re: My comments on "traditional" algorithms
CJ Masenas
4/1/00
Read Re: My comments on "traditional" algorithms
Ed Wall
4/2/00
Read Re: My comments on "traditional" algorithms
Joshua Zucker
4/4/00
Read Re: My comments on "traditional" algorithms
Joshua Zucker
4/4/00
Read Re: My comments on "traditional" algorithms
Ralph A. Raimi
4/4/00
Read Traditional Square-Root Algorithm
Guy Brandenburg
4/4/00
Read Re: Traditional Square-Root Algorithm
Bruce Balden
4/4/00
Read Re: Traditional Square-Root Algorithm
Ed Wall
4/4/00
Read Re: Traditional Square-Root Algorithm
Ralph A. Raimi
4/4/00
Read Re: Traditional Square-Root Algorithm
me@talmanl1.mscd.edu
4/6/00
Read Re: Traditional Square-Root Algorithm
me@talmanl1.mscd.edu
4/5/00
Read Re: My comments on "traditional" algorithms
Howard L. Hansen
4/5/00
Read Good books for smart high school students (was Re: My comments on
"traditional" algorithms)
Joshua Zucker
4/6/00
Read Good Books
Teague, Dan
4/8/00
Read RE: Good Books
Barron, Alfred [PRI]
4/8/00
Read Re: Good books for smart high school students (was Re: My comments
on"traditional" algorithms)
Gerald Von Korff
4/5/00
Read Re: My comments on "traditional" algorithms
Greg Goodknight
4/5/00
Read Re: My comments on "traditional" algorithms
Joshua Zucker
4/5/00
Read Re: My comments on "traditional" algorithms
Ralph A. Raimi
4/6/00
Read Re: My comments on "traditional" algorithms
rex@rocknet.net.au
4/6/00
Read Re: My comments on "traditional" algorithms
Ralph A. Raimi
4/6/00
Read Re: My comments on "traditional" algorithms
Ted Alper
4/6/00
Read Re: My comments on "traditional" algorithms
me@talmanl1.mscd.edu
4/6/00
Read Re: My comments on "traditional" algorithms
Ted Alper
4/10/00
Read Re: My comments on "traditional" algorithms
Sanjoy Mahajan
4/13/00
Read Reply to replies
Bonnie

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.