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Original upload log
The original description page was here. All following user names refer to en.wikipedia.
2007-04-28 22:26 Oleg Alexandrov 400×280 (3947 bytes) Tweak this image a bit. Since this image is meant as a replacement to [[:Image:Tangent.png]], which was deleted as a result, I assume that this image, just as that one, is released under GFDL.
2007-04-28 21:10 Jacj 400×280 (3195 bytes) A labelled tangent to a curve. Created to replace [[:Image:Tangent.png]]