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This is the title page of the first textbook in the calculus of variations, Leonhard Euler's Method of Finding Curved Lines that Show some Property of Maximum or Minimum. It was published in 1744.
Now a good horse and an inferior horse set out from Chang'an to Qi. Qi is 3000 li from Chang'an.
A translation of one of the seminal papers in the field of elliptic integrals, but one that can be read by an undergraduate.
X, Y and Z hired a pasture for the season for $90.00. Each has a different number of mules and are on the pasture for a different number of days. How much is each to pay?

Problems from a 15th century French manuscript, including one with negative solutions

Convergence Advisory Board 2004-2009

Here is the title page of part I of the General Trattato di Numeri (General Treatise on Number and Measure) (1556) of Niccolo Tartaglia (1500-1557). This is an extensive work on elementary mathematics that was popular in Italy for several decades after its publication.
A farmer sold a team of horses for $440, but did not receive his pay for them until 1 yr, 8 mo after the sale. He had at the same time another offer of $410 for them. Did he gain or lose by the sale and by how much, money being worth 6%/yr?
Find two numbers such that multiplying one by the other makes 8 and the sum of their squares is 27.
A song for Pi Day.