Category Archives: Newton

Circle Limit III animation

Posted on 15/11/2012 by dougaj4

Enjoy: And papers by the artist on how to do it available at: http://bulatov.org/math/1107/ Update 16th Nov 12: Comments and more links from PM2Ring: That image is an example of a tessellation of the hyperbolic plane, in the Poincaré disc … Continue reading →

Posted in Animation, Bach, Newton | Tagged , , | Leave a comment

Compiled Matrix Functions for Excel

Posted on 12/11/2012 by dougaj4

This is a follow on from the previous post, showing how the C# version of the ALGLIB maths library can be accessed from Excel, with very little additional coding.  The download file, Matrixdll-c#.zip includes compiled .dll and .tlb files which can be used … Continue reading →

Posted in AlgLib, Arrays, Excel, Finite Element Analysis, Frame Analysis, Link to dll, Maths, Newton, UDFs, VBA | Tagged , , , , , , , , , , , | 4 Comments

Polynomial Update

Posted on 30/10/2012 by dougaj4

Following a comment here: Solving cubic and quartic equations with Excel the Quartic and CubicC User Defined Functions (UDFs) have been amended to fix a problem occurring with some combinations of coefficients. The updated spreadsheet (including full open source code) can be … Continue reading →

Posted in Excel, Maths, Newton, UDFs, VBA | Tagged , , , , , , , | 12 Comments

Mohr’s Circle and Plate Stresses and Actions

Posted on 27/10/2012 by dougaj4

The functions described in this post can be found in the download file PlateStress.zip, including examples and full open source code. The function MCircle returns the plane stress components (XX, YY and XY stress) for any specified stress field, when rotated through a … Continue reading →

Posted in Arrays, Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Newton, Strand7, UDFs, VBA | Tagged , , , , , , | 1 Comment

Ghost Stories

Posted on 22/10/2012 by dougaj4

The first video was directed by my daughter whilst at the Australian Film Television and Radio School last year, and weaves together stories of hard times in the early days of Sydney’s Newtown district: Plug in the headphones, switch off … Continue reading →

Posted in Bach, Excel, Films, Newton | Tagged , , , | 1 Comment