• Free R Chart iPhone App

    Updated: 2010-07-30 23:05:00
    Download the free R-Chart iPhone Application for the latest news and updates from top R web sites... (and this blog too).App Store LinkLeave a comment if you have any feedback or suggestions! Related posts:Updated SoilWeb for the iPhone + Alpha Android Version SoilWeb iPhone App: Beta-Testers?

  • Pythagorean triangles on a circle

    Updated: 2010-07-30 16:12:42
    Wild About Math Making Math fun and accessible Home About Articles Math contest problem links Videos Pythagorean triangles on a circle July 30th , 2010 by Sol If you’ve not yet discovered the Wolfram Demonstrations Project site you’re in for a great treat . The site has tons of interactive Math applications that you can run with the free Mathematica Player . In other words , you don’t need to own Mathematica to run the demonstration . apps I find many of the apps to be very interesting . One I particularly like is Enumerating Pythagorean Triangles It shows a nice relationship between Phythagorean Triples positive integers a , b , c such that a^2 b^2 c^2 and the unit . circle If you enjoyed this post , make sure you subscribe to my RSS feed Post a Comment Name E-mail will not be published

  • An alternative to the ranksum function using the NAG toolbox for MATLAB

    Updated: 2010-07-29 17:25:11
    The MATLAB function ranksum is part of MATLAB’s Statistics Toolbox. Like many organizations who use network licensing for MATLAB and its toolboxes, my employer, The University of Manchester, sometimes runs out of licenses for this toolbox which leads to following error message when you attempt to evaluate ranksum. ??? License checkout failed. License Manager Error [...]

  • A very clever calculator

    Updated: 2010-07-28 11:43:15
    Wild About Math Making Math fun and accessible Home About Articles Math contest problem links Videos A very clever calculator July 28th , 2010 by Sol Below is an image from Wikipedia of a calculating device invented in 1891, Genaille’s rods Each column in the image is a rod that can be placed wherever it’s needed in a . calculation The image shows how to easily calculate 52749×4. Can you figure out how this arithmetic tool works Making a set of these rods would be a great enrichment project . Here is a template in different sizes that you or your children or students can print and mount onto cardstock to make your own set . You’ll want to make a number of each of the rods so that you can multiply by numbers where one or more digits occurs more than . once If you enjoyed this post , make

  • Math Myths

    Updated: 2010-07-27 12:11:53
    Wild About Math Making Math fun and accessible Home About Articles Math contest problem links Videos Math Myths July 27th , 2010 by Sol Don Cohen , AKA The Mathman has been helping children of all ages to learn Math for 34 years . He has a CDROM , book Calculus By and For Young People which he sells via his . site I found these Math Myths from his site to be quite : interesting You can’t take 7 from 3. When you multiply , the answer is bigger . You have to add from right to left . When you subtract the result is smaller . Fractions are small numbers . There’s only one way to do something . When you add the result is bigger . When you divide the result is smaller . I can’t do it unless someone tells me how to do it . Math is hard and only a few people can do it . You have to know everything

  • Mental Floss brain game

    Updated: 2010-07-24 11:53:20
    Mental Floss is one of my very favorite magazines. Here’s a simple (if you see it) puzzle from their web-site: The answer is here. SHARETHIS.addEntry({ title: "Mental Floss brain game", url: "http://wildaboutmath.com/2010/07/24/mental-floss-brain-game/" });

  • Have you seen asciiTeX?

    Updated: 2010-07-23 01:08:10
    Here’s a very geek way to impress your geek friends. asciiTeX! Like the name says, asciiTeX takes input similar to that for LaTex and renders mathematical equations in plain ASCII. Wow! Check it out at Sourceforge.net. SHARETHIS.addEntry({ title: "Have you seen asciiTeX?", url: "http://wildaboutmath.com/2010/07/23/have-you-seen-asciitex/" });

  • Granddaddy of fractals on TED

    Updated: 2010-07-21 08:02:12
    Wild About Math Making Math fun and accessible Home About Articles Math contest problem links Videos Granddaddy of fractals on TED July 21st , 2010 by Sol From TED At TED2010, mathematics legend Benoit Mandelbrot develops a theme he first discussed at TED in 1984 the extreme complexity of roughness , and the way that fractal math can find order within patterns that seem unknowably complicated . Here’s some biographical information on Mandelbrot Studying complex dynamics in the 1970s , Benoit Mandelbrot had a key insight about a particular set of mathematical objects : that these self-similar structures with infinitely repeating complexities were not just curiosities , as they’d been considered since the turn of the century , but were in fact a key to explaining non-smooth objects and

  • Installing Gaussian 03 on Ubuntu 9.10

    Updated: 2010-07-07 16:15:11
    I was recently asked to install 32bit Gaussian 03 binaries on an Ubuntu 9.10 machine and when I tried to run a test job I got the following error message Erroneous write during file extend. write -1 instead of 4096 Probably out of disk space. Erroneous write during file extend. write -1 instead of 4096 Probably out of disk [...]

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