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 look to provide deliveries into the box for teammates. On occasion, the false-10 can also function in a different manner alongside a false-9, usually in a 4–6–0 formation, disguised as either a 4–3–3 or 4–2–3–1 formation. When other forwards or false-9s drop deep and draw defenders away from the false-10s, creating space in the middle of the pitch, the false-10 will then also surprise defenders by exploiting this space and moving out of position once again, often undertaking offensive dribbling runs forward towards goal, or running on to passes from false-9s, which in turn enables them to create goalscoring opportunities