Y ' = 4X^3 - 4X
Y'' = 12X^2 - 4
12X^2 = 4
X^2 = 4/12
X = 2 V 1\12 ( V - корень)
Y = X^4 - 2X^2 - 3
Y = (2 V 1/12) ^4 - 2 * (2 V 1/12) ^ 2 - 3 = 16\144 - 4\6 - 3 = 1\9 - 2\3 - 3 = - 5\9 - 3 = - 3 5\9
Y ' = 4X^3 - 4X
Y'' = 12X^2 - 4
12X^2 = 4
X^2 = 4/12
X = 2 V 1\12 ( V - корень)
Y = X^4 - 2X^2 - 3
Y = (2 V 1/12) ^4 - 2 * (2 V 1/12) ^ 2 - 3 = 16\144 - 4\6 - 3 = 1\9 - 2\3 - 3 = - 5\9 - 3 = - 3 5\9