Опубликовано в "Образование", язык - English. 10 страниц.
In mathematics, a parabola is a plane curve, which is mirror-symmetrical, and is approximately U-shaped when oriented as shown in the diagram below (it remains a parabola if it is differently oriented). It fits any of several superficially different mathematical descriptions, which can all be proved to define exactly the same curves. Еще
