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Complex Newton Method Applet Version History

Version 2.5

  1. Iteration panel displays iterations of Newton map, F(z), instead of original function f(z).

Version 2.4

  1. Corrected issues with 4 new functions added in version 2.3.

Version 2.3

  1. Added 4 more functions to pre-defined function menu.

Version 2.2

  1. Fixed typo in function defintion of z^2-3z+2.

Version 2.1

  1. Fixed plot roots bug where roots did not update when changing funtions.
  2. Thumbnails are now removed when changing functions.
  3. Boxed/cross axes property is now reflected in thumbnails.

Version 2.0

  1. Added "ctrl+click" which means "place cursor location in default zoom field."
  2. Added f(z)=z(z-1-i) to list of pre-selected functions.
  3. Changed "Graph" button to "Graph/Update" button.
  4. Added "Proceed only when told to" dialogue box when clicking "Graph Basins" box.
  5. Thumbnail capability added with no limit on # of thumbnails.
  6. Added label of "Find roots of function."
  7. Fixed bug occuring when iterating initial value.

Version 1.2

  1. Changed default radius of convergence for the first 4 pre-selected functions.

Version 1.1

  1. Added some new pre-selected functions.
  2. Some parameters did not update correctly when clicking "Update" or "Graph." This has been fixed.
  3. Circles of convergence did not always update correctly when other things changed. This has been fixed.

Version 1.0

  1. Version number becomes 1.0
  2. For pre-selected functions, use "radius of convergence" to determine convergence rather than tolerance on step size.
  3. Pre-selected functions are hard coded, thus speeding up execution.
  4. Graphs of radii of convergence are available for pre-selected functions.
  5. Latest version of iter pane is used.

Version 0.9

  1. Menu bar added.
  2. Fixed bug occuring when number of orbit points pass 200.

Version 0.82

  1. New function added to drop down menu.

Version 0.81

  1. Using latest version of Default View menu.

Version 0.8

  1. Integrated new default domain menu and ability to capture new domain/ranges.
  2. "Default Domain" button becomes "Default View" button.

Version 0.7

  1. Changed some label sizes so they would show up correctly on Windows
  2. Changed color of iterations to white on fractal, black on non-fractal.

Version 0.6

  1. Added z^3-1 to drop down menu.
  2. Changed domain/range for z^2-3z+1 tp [-3,3] x [-3,3]
  3. Fixed bug on zooming via mouse wheel.

Version 0.5

  1. Removed options for circular and rectangular grids.
  2. Removed graph of range of function.
  3. Changed color scheme.
  4. Turned on ability to zoom via dragging.
  5. Corrected problem where basins of attraction were off-center.

Version 0.4

  1. Header in iteration panel stays in place when scrolling up/down.
  2. Bug that prevented entry of starting iterate from keyboard has been fixed.
  3. Labels changed in a few places.

Version 0.3

  1. This version was not released.

Version 0.2

  1. Fixed bug that caused colors to change when zooming.

 

Complex NewtTool, version 0.1

  1. Iterate complex version of Newton's method.
  2. See basins of attraction for all roots.
  3. Zoom in/out by scrolling mouse wheel or using slider on zoom panel.
  4. Zoom in/out by clicking Zoom on/off button and then right/left click on grapher.