x 1 − x 2 3 − x 2 5 {\displaystyle {\frac {x}{1-{\frac {x^{2}}{3-{\frac {x^{2}}{5}}}}}}}
http://en.wikipedia.org/wiki/Software_bug
http://es.wikipedia.org/wiki/MIM-104_Patriot#El_error_de_Dharan
