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This is the title page to Rene Descartes' Treatise on Method, with its three famous essays on Dioptrics, Meteorology, and Geometry. The third essay contains Descartes' treatment of analytic geometry as well as his theory of equations and his rule for finding the normal to a given curve.
Classrom suggestions for integrating Leonardo's ideas in several different classes
Essays on how number has been critical to the work of scientists through the ages.
Two men starting from the same point begin walking in different directions. Their rates of travel are in the ratio 7:3.
The classic work by Dirk Struik is still worth reading, especially for its attention to the social context of the development of mathematical ideas.
What is the perpendicular height of a cloud when its angles of elevation were 35 degrees and 64 degrees as taken by two observers at the same time...
An introduction to the priority dispute between Euler and D'Alembert relating to several mathematical ideas that both worked on in the 1740s and 1750s.
This is the page illustrating the construction of an ellipse, from the Latin translation (1538) of the Treatise on Mensuration of Albrecht D�rer (1471-1528). This book was originally written in German and published in 1525 and was designed to teach German artists the geometrical ideas on which perspective in painting was based.
A cliff with a tower on its edge is observed from a boat at sea; find the height of the cliff and the tower.

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