File:Zeroes of Cubic.svg

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Description Number of real zeroes of z^3+pz+q. For pairs (p,q) on the green curve the polynomial has a zero in common with its first derivative and therefore possesses at least one multiple zero. For pairs (p,q) off the line all zeroes are simple. To the left of the line (blue zone) there are three distinct real zeroes; to the right of the line (yellow zone) there is exactly one real zero.
Date
Source Own work
Author Lieven Smits

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I, Lieven Smits, the copyright holder of this work, hereby publishes it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: I, Lieven Smits
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This licensing tag was added to this file as part of the GFDL licensing update.
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic and 1.0 Generic license.
Attribution: I, Lieven Smits
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
You may select the license of your choice.

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current21:24, 11 July 2007Thumbnail for version as of 21:24, 11 July 2007600 × 400 (3 KB)Lieven Smits (talk | contribs){{Information |Description=Number of real zeroes of z^3+pz+q. For pairs (p,q) on the green curve the polynomial has a zero in common with its first derivative and therefore possesses at least one multiple zero. For pairs (p,q) off the line all zeroes are

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