y' = x^2 - 18x + 80y' = 0: x^2 - 18x + 80 = 0D = 324 - 320 = 4x1 = 10; x2 = 8 - не уд. усл.y[9] = -2y[10] = -4y[14] = 44ответ: -4
y' = x^2 - 18x + 80
y' = 0: x^2 - 18x + 80 = 0
D = 324 - 320 = 4
x1 = 10; x2 = 8 - не уд. усл.
y[9] = -2
y[10] = -4
y[14] = 44
ответ: -4