11/2 x1 2

1

E=1/2

0

V(x)

x

1/3 12/3 x

1/3

0

F(x)

12/3 x-4/27

V(x)

0

12/3-4/27

V(x)

0x1 x2 x3 x4 x5

E=E3

E=E2

E=E1

x

Alexandros Tsouros