a)
p(x) = 5000 - 5000/100·x = 5000 - 50·x
E(x) = p(x)·x = (5000 - 50·x)·x = 5000·x - 50·x2
b)
m = Δy/Δx = (116000 - 80000)/(80 - 20) = 600
K(x) = m·(x - Px) + Py = 600·(x - 20) + 80000 = 600·x + 68000
c)
G(x) = E(x) - K(x) = (5000·x - 50·x2) - (600·x + 68000) = - 50·x2 + 4400·x - 68000
d)Plotlux öffnen f1(x) = 5000-50·xf2(x) = 5000·x-50·x2f3(x) = 600·x+68000f4(x) = -50·x2+4400·x-68000Zoom: x(-10…110) y(-20000…150000)