"There is no evidence in support of the hypothesis that x is derived ultimately from the mediaeval transliteration xei of shei "thing", used by the Arabs to denote the unknown quantity, or from the compendium for L. res "thing" or radix "root" (resembling a loosely-written x), used by mediaeval mathematicians."
www.anfrix.com/?p=447#comment-8265
y siguientes... a mí tampoco me aclara nada de nada. Creo que se debería leer antes esto (qué tal si lo meneo?):
members.aol.com/jeff570/variables.html
"There is no evidence in support of the hypothesis that x is derived ultimately from the mediaeval transliteration xei of shei "thing", used by the Arabs to denote the unknown quantity, or from the compendium for L. res "thing" or radix "root" (resembling a loosely-written x), used by mediaeval mathematicians."
Se lo voy a poner ahora en el blog...