Basin Of Attraction
AllPages
RecentChanges
Links to this page
Edit this page
Search
Entry portal
Advice For New Users

Basins of attraction
of the cubic $x^3=1$
The basin of attraction of a particular solution to an equation, such as a cubic equation, under a solution method, such as Newton's Method, is the collection of starting points that end at that solution.

For the cubic equation in the complex plane the basins of attraction are fractals.

Here we have coloured each point according to the root that Newton's Method converges to. When close to a root, that's where you end up. However, when nearly equidistant from two roots the derivative is close to zero, so the tangent can take us a long way away. Then we are starting the process from an effectively random point.

Links to this page / Page history / Last change to this page
Recent changes / Edit this page (with sufficient authority)
All pages / Search / Change password / Logout