c = -3
f(x) = (1 / 4 * ((-x^(4)) + (12 * x^(3)) - (54 * x^(2)) + (112 * x) - 69))
f'(x) = f'(x)
f''(x) = f''(x)
gl1: x = 3
gl2: x = 4
a: f(3)
b: f'(3)
n = 0.13
E = Extremum(f)
e: f'(3)
F = TurningPoint(f')
G = Extremum(f'')
P: (3, f(3))
H = TurningPoint(f)
fff(x) = ((-3) * (x - 3)^(2))
c_{1} = 0
c_{3} = 0
g(x) = (((-1)) / 4 * (x - 3)^(4)) + x + 3