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Convergence articles

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This is a description of the crosswalk from Convergence to Loci Convergence.
The third part of a necklace of pearls, broken in a lover's quarrel, fell to the ground...

Curve sketching, tangent lines, and optimization, explored via interactive applets

A collection of short lectures by Howard Eves giving details on 20 important happenings in the history of mathematics before 1650.
A speculator bought stock at 25% below par and sold it at 20% above par. He gained $1560. How much did he invest?
An argument that the teaching of elementary integration should better reflect its historical development
A description of this well-regarded website.
In the middle of the 18th century, King Frederick the Great of Prussia became interested in creating a lottery to raise money. As was his custom when mathematical matters were involved, he called upon Leonhard Euler for counsel.
Title page of Jacob Bernoulli's Ars Conjectandi (The Art of Conjecturing), published posthumously in 1713 by his nephew Nicolaus I Bernoulli. The Ars Conjectandi is famous for Bernoulli's statement of a general rule for summing integral powers as well as for the first statement and proof of the Law of Large Numbers.
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.