False position method double false position formula on that line segment. More precisely, suppose that in the -th iteration the bracketing interval is . Construct the line through the points and , as illustrated. This line is a secant or chord of the graph of the function . In point-slope form, its equation is given by Now choose to be the -intercept of this line, that is, the value of for which , and substitute these values to obtain Solving this equation for "c" gives: This last symmetrical form has a computational advantage: As a solution is approached, and will be very close
Midfielder mark specific opposition attackers. Defensive midfielders may also move to the full-back or centre-back positions if those players move forward to join in an attack. Sergio Busquets described his attitude: "The coach knows that I am an obedient player who likes to help out and if I have to run to the wing to cover someone's position, great." A good defensive midfielder needs good positional awareness, anticipation of opponent's play, marking, tackling, interceptions, passing and great stamina and strength (for their tackling). A holding or deep-lying midfielder stays close to their team's defence, while other midfielders may move forward to