The variable “x” is used widely in the mathematics of all cultures, American or not. But why?
Some explain it as a mistranslation from Arabic to Spanish, substituting Greek Chi (X) for Arabic “al-shalan.”
It could be Rene Descartes’ La Geometrie, one of the seminal works in math, that decided “x” should be used as a variable. But why? No one really knows.
Either way, math, along with science, is filled with English. Learn English to better understand these subjects!
Image: Mariusz Kucharczyk.