File:Negative2ndDerivativeSigmoidCurve.gif
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Negative2ndDerivativeSigmoidCurve.gif (300 × 181 pixels, file size: 3 KB, MIME type: image/gif)
Plot of the second derivative of -tanh x from -2 to 1 by Wolfram Alpha. Made by me today, no rights reserved. —TobyBartels (talk) 18:08, 10 December 2013 (UTC)
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:46, 8 July 2026 | Error creating thumbnail: Unable to save thumbnail to destination | 300 × 181 (3 KB) | Maintenance script (talk | contribs) | Imported from explainxkcd.com archive |
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