False position method lines on a conic section. A more typical example is this "joint purchase" problem: Now an item is purchased jointly; everyone contributes 8 [coins], the excess is 3; everyone contributes 7, the deficit is 4. Tell: The number of people, the item price, what is each? Answer: 7 people, item price 53. Between the 9th and 10th centuries, the Egyptian mathematician Abu Kamil wrote a now-lost treatise on the use of double false position, known as the "Book of the Two Errors" ("Kitāb al-khaṭāʾayn"). The oldest surviving writing on double false position from the Middle East is that of Qusta
Midfielder attack. The holding midfielder may also have responsibilities when their team has the ball. This player will make mostly short and simple passes to more attacking members of their team but may try some more difficult passes depending on the team's strategy. Marcelo Bielsa is considered as a pioneer for the use of a holding midfielder in defence. This position may be seen in the 4–2–3–1 and 4–4–2 diamond formations. Initially, a defensive midfielder, or "destroyer", and a playmaker, or "creator", were often fielded alongside each other as a team's two holding central midfielders. The destroyer was usually responsible for