The tides of the the quadratic formula

quadratic search

I’m teaching the quadratic formula right now in my classes and just ran across this on my Tumblr. This is the number of google queries for the quadratic formula over time. As Charmed as Charmander says, “It repeats in the same pattern every year. Down in summer, up in September, down again in December and up again in spring time before going down again in the summer.” It makes sense that there is a pattern. It amazes me just how regular it is.

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