8 How many functions includes the characteristic function set FC(x) which is specified by the calculated mark functions? Verify that the system function F(x, y) (7.2) describes an incompletely specified function.

F(x, y)=((x1x2(x3 ⊕ x4)y ∨ x3x4(x5 ⊕ x6)y ∨ x1x7y

∨ x1x2x6x7) ⊕ x6) ∨ (x3 ⊕ x4)x6 ∨ x3x4x5

∨ x1x3x6x7 ∨ x1x2(x3 ⊕ x4)x6x7. (7.2)

Calculate all three associated mark functions and verify that these functions are pairwisely disjoint. Reconstruct the function F(x, y) based on each pair of mark functions and verify the result