File:Wag-131-3 Parabola Envelope.png

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Description
English: Figure - Parabola Envelope.
Author William Anthony Granville, Ph.D., LL.D.
Date
Source Elements of the Differential and Integral Calculus (revised), The Athenæum Press, Ginn and Company, Boston, U.S.A., 1911.
Permission
(Reusing this file)

This file is in the public domain in the United States because it was published before January 1, 1929.


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current06:33, 24 September 2011Thumbnail for version as of 06:33, 24 September 2011266 × 296 (35 KB)TaffyDownUnder (talk | contribs)== Summary == {{Information |Description ={{en|1=Figure - Parabola Envelope.}} |Source =Elements of the Differential and Integral Calculus (revised), The Athenæum Press, Ginn and Company, Boston, U.S.A., 1911. |Author =William Anthony