This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Overlaid pictures over one another and changed colors to distinguish. The original can be viewed here: Sec proportional.svg: . Modifications made by Adrignola.

I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

This image is a derivative work of the following images:

• File:Cos_proportional2.svg licensed with PD-self
  • 2007-12-10T18:40:19Z Olaf 658x620 (23905 Bytes) {{Information |Description=Plot of cos(x) with proportional scales and the gnuplot source. Version with size compatible with other my plots, to fit one gallery box (see [[:pl:Funkcje trygonometryczne#Wykresy dla argumentów r

• File:Sec_proportional.svg licensed with PD-self
  • 2007-12-10T18:16:37Z Olaf 658x620 (22750 Bytes) {{Information |Description=Plot of sec(x) with proportional scales and the gnuplot source |Source=self-made |Date= |Author= [[User:Olaf m|Olaf m]] |Permission= |other_versions= }} set terminal svg enhanced font "Arial,10" si