f(x) = x^3 - 6·x^2 + 8·x
g(x) = - 7/4·(x - 2) + 0 = 3.5 - 1.75·x
d(x) = (x^3 - 6·x^2 + 8·x) - (3.5 - 1.75·x) = x^3 - 6·x^2 + 9.75·x - 3.5
D(x) = 0.25·x^4 - 2·x^3 + 4.875·x^2 - 3.5·x
Schnittpunkte d(x) = 0
x^3 - 6·x^2 + 9.75·x - 3.5 = 0 --> x = 3.5 ∨ x = 0.5 ∨ x = 2
∫ (0.5 bis 2) d(x) dx = D(2) - D(0.5) = 1/2 - (- 49/64) = 81/64 = 1.265625 FE