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What’s so special about 3? (English)
Math. Teach. (Reston) 108, No. 1, 71-75 (2014).
From the text: A few years ago, I encountered two different problems in which the number 3 played surprising roles. I found myself wondering, “Why 3? What’s so special about 3?" Further investigation led to continuous extensions involving exponents, logarithms, a parametric equation, max-min problems, and some history of mathematics. As you read, pause to try the problems and play with the applets.
Classification: F69 F59 H39
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