Odpowiedzi

2010-04-11T23:17:59+02:00
(2+y)/2 = x
2*y = (x-1)²

^ to w klamrze

2 + y = 2x <-- y = 2x - 2
2y = x² - 2x + 1

2 (2x -2) = x² -2x + 1
4x - 4 = x² -2x + 1
x² -6x + 5 = 0

delta = 36 - 20 = 16 pierw z delty = 4
x1 = (6 - 4)/ 2 = 1
x2 = 6+4 / 2 = 5

gdy x = 1 y = 0
gdy x = 5 y = 8