у = 3х/х² - 1 + √2 - х
y = 3/х - х - 1 + √2
x = -1
y = 3/(-1) - (-1) - 1 + √2
y = -3 + 1 - 1 + √2
y = √2 - 3
x = 2
y = 3/2 - 2 - 1 + √2
y = √2 - 1,5
