y = -x³/3 + 4x² - 7x + 18
у' = -3x^2/3 + 8x - 7 = -x^2 + 8x - 7
-x^2 + 8x - 7 = 0
x^2 - 8x + 7 = 0
(x - 1)(x - 7) = 0
x є {1; 7} - две точки.
y = -x³/3 + 4x² - 7x + 18
у' = -3x^2/3 + 8x - 7 = -x^2 + 8x - 7
-x^2 + 8x - 7 = 0
x^2 - 8x + 7 = 0
(x - 1)(x - 7) = 0
x є {1; 7} - две точки.