This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionTschirnhausen cubic.svg
English: Graph of the cubic curve in the domain . Despite the title of the image this is not the Tschirnhausen cubic, which has a different crossing angle at its double point. Plotted using 40 segments of quadratic spline for each of . Minor defects in the plotting can be observed near
Previous version had been created with Gnuplot (74290 bytes) d now 2.9% of previous size
Please do not replace the simplified code of this file with a version created with Inkscape or any other graphical vector graphics editor
This work is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or any later version. This work is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. See version 2 and version 3 of the GNU General Public License for more details.http://www.gnu.org/licenses/gpl.htmlGPLGNU General Public Licensetruetrue
Original upload log
This image is a derivative work of the following images: