Автор - atHight377
Ответ:
Просто подставляем: 1) 2 *10-1=19, 2*(-4.5)-1=-10, 2*15-1=29, 2*251-1=501, 2*600-1=1199
2) 5=2*3-1, 11=2*6-1, 29=2*15-1, - 19=2*(-9)-1, - 57=2*(-28)-1, 205=2*103-1, - 7/2=2*(-3/2)-1
у = 2х - 1,
1)
у (1) = 2*10 - 1 = 19,
у (-4,5) = -2*4,5 - 1 = -10,
у (15) = 2*15 - 1 = 29,
у (251) = 2*251 - 1 = 501,
у (600) = 2*600 - 1 = 1199,
2)
5 = 2х - 1,
2х = 5 + 1,
х = 3,
11 = 2х - 1,
2х = 11 + 1,
х = 6,
29 = 2х - 1,
2х = 29 + 1,
х = 15,
-19 = 2х - 1,
2х = -19 + 1,
х = -9,
-57 = 2х - 1,
2х = -57 + 1,
х = -28,
205 = 2х - 1,
2х = 205 + 1,
х = 103,
-3 1/2 = 2х - 1,
2х = -3 1/2 + 1,
2х = -2 1/2,
х = - 1 1/4