Таблица истинности для функции (Z→W)∧(Y≡¬X)→(U≡(Y∨Z)):


Промежуточные таблицы истинности:
Z→W:
ZWZ→W
001
011
100
111

¬X:
X¬X
01
10

Y≡(¬X):
YX¬XY≡(¬X)
0010
0101
1011
1100

Y∨Z:
YZY∨Z
000
011
101
111

U≡(Y∨Z):
UYZY∨ZU≡(Y∨Z)
00001
00110
01010
01110
10000
10111
11011
11111

(Z→W)∧(Y≡(¬X)):
ZWYXZ→W¬XY≡(¬X)(Z→W)∧(Y≡(¬X))
00001100
00011011
00101111
00111000
01001100
01011011
01101111
01111000
10000100
10010010
10100110
10110000
11001100
11011011
11101111
11111000

((Z→W)∧(Y≡(¬X)))→(U≡(Y∨Z)):
ZWYXUZ→W¬XY≡(¬X)(Z→W)∧(Y≡(¬X))Y∨ZU≡(Y∨Z)((Z→W)∧(Y≡(¬X)))→(U≡(Y∨Z))
000001100011
000011100001
000101011011
000111011000
001001111100
001011111111
001101000101
001111000111
010001100011
010011100001
010101011011
010111011000
011001111100
011011111111
011101000101
011111000111
100000100101
100010100111
100100010101
100110010111
101000110101
101010110111
101100000101
101110000111
110001100101
110011100111
110101011100
110111011111
111001111100
111011111111
111101000101
111111000111

Общая таблица истинности:

ZWYXUZ→W¬XY≡(¬X)Y∨ZU≡(Y∨Z)(Z→W)∧(Y≡(¬X))(Z→W)∧(Y≡¬X)→(U≡(Y∨Z))
000001100101
000011100001
000101010111
000111010010
001001111010
001011111111
001101001001
001111001101
010001100101
010011100001
010101010111
010111010010
011001111010
011011111111
011101001001
011111001101
100000101001
100010101101
100100011001
100110011101
101000111001
101010111101
101100001001
101110001101
110001101001
110011101101
110101011010
110111011111
111001111010
111011111111
111101001001
111111001101

Логическая схема:

Совершенная дизъюнктивная нормальная форма (СДНФ):

По таблице истинности:
ZWYXUF
000001
000011
000101
000110
001000
001011
001101
001111
010001
010011
010101
010110
011000
011011
011101
011111
100001
100011
100101
100111
101001
101011
101101
101111
110001
110011
110100
110111
111000
111011
111101
111111
Fсднф = ¬Z∧¬W∧¬Y∧¬X∧¬U ∨ ¬Z∧¬W∧¬Y∧¬X∧U ∨ ¬Z∧¬W∧¬Y∧X∧¬U ∨ ¬Z∧¬W∧Y∧¬X∧U ∨ ¬Z∧¬W∧Y∧X∧¬U ∨ ¬Z∧¬W∧Y∧X∧U ∨ ¬Z∧W∧¬Y∧¬X∧¬U ∨ ¬Z∧W∧¬Y∧¬X∧U ∨ ¬Z∧W∧¬Y∧X∧¬U ∨ ¬Z∧W∧Y∧¬X∧U ∨ ¬Z∧W∧Y∧X∧¬U ∨ ¬Z∧W∧Y∧X∧U ∨ Z∧¬W∧¬Y∧¬X∧¬U ∨ Z∧¬W∧¬Y∧¬X∧U ∨ Z∧¬W∧¬Y∧X∧¬U ∨ Z∧¬W∧¬Y∧X∧U ∨ Z∧¬W∧Y∧¬X∧¬U ∨ Z∧¬W∧Y∧¬X∧U ∨ Z∧¬W∧Y∧X∧¬U ∨ Z∧¬W∧Y∧X∧U ∨ Z∧W∧¬Y∧¬X∧¬U ∨ Z∧W∧¬Y∧¬X∧U ∨ Z∧W∧¬Y∧X∧U ∨ Z∧W∧Y∧¬X∧U ∨ Z∧W∧Y∧X∧¬U ∨ Z∧W∧Y∧X∧U
Логическая cхема:

Совершенная конъюнктивная нормальная форма (СКНФ):

По таблице истинности:
ZWYXUF
000001
000011
000101
000110
001000
001011
001101
001111
010001
010011
010101
010110
011000
011011
011101
011111
100001
100011
100101
100111
101001
101011
101101
101111
110001
110011
110100
110111
111000
111011
111101
111111
Fскнф = (Z∨W∨Y∨¬X∨¬U) ∧ (Z∨W∨¬Y∨X∨U) ∧ (Z∨¬W∨Y∨¬X∨¬U) ∧ (Z∨¬W∨¬Y∨X∨U) ∧ (¬Z∨¬W∨Y∨¬X∨U) ∧ (¬Z∨¬W∨¬Y∨X∨U)
Логическая cхема:

Построение полинома Жегалкина:

По таблице истинности функции
ZWYXUFж
000001
000011
000101
000110
001000
001011
001101
001111
010001
010011
010101
010110
011000
011011
011101
011111
100001
100011
100101
100111
101001
101011
101101
101111
110001
110011
110100
110111
111000
111011
111101
111111

Построим полином Жегалкина:
Fж = C00000 ⊕ C10000∧Z ⊕ C01000∧W ⊕ C00100∧Y ⊕ C00010∧X ⊕ C00001∧U ⊕ C11000∧Z∧W ⊕ C10100∧Z∧Y ⊕ C10010∧Z∧X ⊕ C10001∧Z∧U ⊕ C01100∧W∧Y ⊕ C01010∧W∧X ⊕ C01001∧W∧U ⊕ C00110∧Y∧X ⊕ C00101∧Y∧U ⊕ C00011∧X∧U ⊕ C11100∧Z∧W∧Y ⊕ C11010∧Z∧W∧X ⊕ C11001∧Z∧W∧U ⊕ C10110∧Z∧Y∧X ⊕ C10101∧Z∧Y∧U ⊕ C10011∧Z∧X∧U ⊕ C01110∧W∧Y∧X ⊕ C01101∧W∧Y∧U ⊕ C01011∧W∧X∧U ⊕ C00111∧Y∧X∧U ⊕ C11110∧Z∧W∧Y∧X ⊕ C11101∧Z∧W∧Y∧U ⊕ C11011∧Z∧W∧X∧U ⊕ C10111∧Z∧Y∧X∧U ⊕ C01111∧W∧Y∧X∧U ⊕ C11111∧Z∧W∧Y∧X∧U

Так как Fж(00000) = 1, то С00000 = 1.

Далее подставляем все остальные наборы в порядке возрастания числа единиц, подставляя вновь полученные значения в следующие формулы:
Fж(10000) = С00000 ⊕ С10000 = 1 => С10000 = 1 ⊕ 1 = 0
Fж(01000) = С00000 ⊕ С01000 = 1 => С01000 = 1 ⊕ 1 = 0
Fж(00100) = С00000 ⊕ С00100 = 0 => С00100 = 1 ⊕ 0 = 1
Fж(00010) = С00000 ⊕ С00010 = 1 => С00010 = 1 ⊕ 1 = 0
Fж(00001) = С00000 ⊕ С00001 = 1 => С00001 = 1 ⊕ 1 = 0
Fж(11000) = С00000 ⊕ С10000 ⊕ С01000 ⊕ С11000 = 1 => С11000 = 1 ⊕ 0 ⊕ 0 ⊕ 1 = 0
Fж(10100) = С00000 ⊕ С10000 ⊕ С00100 ⊕ С10100 = 1 => С10100 = 1 ⊕ 0 ⊕ 1 ⊕ 1 = 1
Fж(10010) = С00000 ⊕ С10000 ⊕ С00010 ⊕ С10010 = 1 => С10010 = 1 ⊕ 0 ⊕ 0 ⊕ 1 = 0
Fж(10001) = С00000 ⊕ С10000 ⊕ С00001 ⊕ С10001 = 1 => С10001 = 1 ⊕ 0 ⊕ 0 ⊕ 1 = 0
Fж(01100) = С00000 ⊕ С01000 ⊕ С00100 ⊕ С01100 = 0 => С01100 = 1 ⊕ 0 ⊕ 1 ⊕ 0 = 0
Fж(01010) = С00000 ⊕ С01000 ⊕ С00010 ⊕ С01010 = 1 => С01010 = 1 ⊕ 0 ⊕ 0 ⊕ 1 = 0
Fж(01001) = С00000 ⊕ С01000 ⊕ С00001 ⊕ С01001 = 1 => С01001 = 1 ⊕ 0 ⊕ 0 ⊕ 1 = 0
Fж(00110) = С00000 ⊕ С00100 ⊕ С00010 ⊕ С00110 = 1 => С00110 = 1 ⊕ 1 ⊕ 0 ⊕ 1 = 1
Fж(00101) = С00000 ⊕ С00100 ⊕ С00001 ⊕ С00101 = 1 => С00101 = 1 ⊕ 1 ⊕ 0 ⊕ 1 = 1
Fж(00011) = С00000 ⊕ С00010 ⊕ С00001 ⊕ С00011 = 0 => С00011 = 1 ⊕ 0 ⊕ 0 ⊕ 0 = 1
Fж(11100) = С00000 ⊕ С10000 ⊕ С01000 ⊕ С00100 ⊕ С11000 ⊕ С10100 ⊕ С01100 ⊕ С11100 = 0 => С11100 = 1 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 = 1
Fж(11010) = С00000 ⊕ С10000 ⊕ С01000 ⊕ С00010 ⊕ С11000 ⊕ С10010 ⊕ С01010 ⊕ С11010 = 0 => С11010 = 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 = 1
Fж(11001) = С00000 ⊕ С10000 ⊕ С01000 ⊕ С00001 ⊕ С11000 ⊕ С10001 ⊕ С01001 ⊕ С11001 = 1 => С11001 = 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 = 0
Fж(10110) = С00000 ⊕ С10000 ⊕ С00100 ⊕ С00010 ⊕ С10100 ⊕ С10010 ⊕ С00110 ⊕ С10110 = 1 => С10110 = 1 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 1 ⊕ 1 = 1
Fж(10101) = С00000 ⊕ С10000 ⊕ С00100 ⊕ С00001 ⊕ С10100 ⊕ С10001 ⊕ С00101 ⊕ С10101 = 1 => С10101 = 1 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 1 ⊕ 1 = 1
Fж(10011) = С00000 ⊕ С10000 ⊕ С00010 ⊕ С00001 ⊕ С10010 ⊕ С10001 ⊕ С00011 ⊕ С10011 = 1 => С10011 = 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 1 = 1
Fж(01110) = С00000 ⊕ С01000 ⊕ С00100 ⊕ С00010 ⊕ С01100 ⊕ С01010 ⊕ С00110 ⊕ С01110 = 1 => С01110 = 1 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 1 = 0
Fж(01101) = С00000 ⊕ С01000 ⊕ С00100 ⊕ С00001 ⊕ С01100 ⊕ С01001 ⊕ С00101 ⊕ С01101 = 1 => С01101 = 1 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 1 = 0
Fж(01011) = С00000 ⊕ С01000 ⊕ С00010 ⊕ С00001 ⊕ С01010 ⊕ С01001 ⊕ С00011 ⊕ С01011 = 0 => С01011 = 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 0 = 0
Fж(00111) = С00000 ⊕ С00100 ⊕ С00010 ⊕ С00001 ⊕ С00110 ⊕ С00101 ⊕ С00011 ⊕ С00111 = 1 => С00111 = 1 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 1 = 0
Fж(11110) = С00000 ⊕ С10000 ⊕ С01000 ⊕ С00100 ⊕ С00010 ⊕ С11000 ⊕ С10100 ⊕ С10010 ⊕ С01100 ⊕ С01010 ⊕ С00110 ⊕ С11100 ⊕ С11010 ⊕ С10110 ⊕ С01110 ⊕ С11110 = 1 => С11110 = 1 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 0 ⊕ 1 = 0
Fж(11101) = С00000 ⊕ С10000 ⊕ С01000 ⊕ С00100 ⊕ С00001 ⊕ С11000 ⊕ С10100 ⊕ С10001 ⊕ С01100 ⊕ С01001 ⊕ С00101 ⊕ С11100 ⊕ С11001 ⊕ С10101 ⊕ С01101 ⊕ С11101 = 1 => С11101 = 1 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 1 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 1 = 1
Fж(11011) = С00000 ⊕ С10000 ⊕ С01000 ⊕ С00010 ⊕ С00001 ⊕ С11000 ⊕ С10010 ⊕ С10001 ⊕ С01010 ⊕ С01001 ⊕ С00011 ⊕ С11010 ⊕ С11001 ⊕ С10011 ⊕ С01011 ⊕ С11011 = 1 => С11011 = 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 1 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 1 = 1
Fж(10111) = С00000 ⊕ С10000 ⊕ С00100 ⊕ С00010 ⊕ С00001 ⊕ С10100 ⊕ С10010 ⊕ С10001 ⊕ С00110 ⊕ С00101 ⊕ С00011 ⊕ С10110 ⊕ С10101 ⊕ С10011 ⊕ С00111 ⊕ С10111 = 1 => С10111 = 1 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 0 ⊕ 1 = 0
Fж(01111) = С00000 ⊕ С01000 ⊕ С00100 ⊕ С00010 ⊕ С00001 ⊕ С01100 ⊕ С01010 ⊕ С01001 ⊕ С00110 ⊕ С00101 ⊕ С00011 ⊕ С01110 ⊕ С01101 ⊕ С01011 ⊕ С00111 ⊕ С01111 = 1 => С01111 = 1 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 = 0
Fж(11111) = С00000 ⊕ С10000 ⊕ С01000 ⊕ С00100 ⊕ С00010 ⊕ С00001 ⊕ С11000 ⊕ С10100 ⊕ С10010 ⊕ С10001 ⊕ С01100 ⊕ С01010 ⊕ С01001 ⊕ С00110 ⊕ С00101 ⊕ С00011 ⊕ С11100 ⊕ С11010 ⊕ С11001 ⊕ С10110 ⊕ С10101 ⊕ С10011 ⊕ С01110 ⊕ С01101 ⊕ С01011 ⊕ С00111 ⊕ С11110 ⊕ С11101 ⊕ С11011 ⊕ С10111 ⊕ С01111 ⊕ С11111 = 1 => С11111 = 1 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 0 ⊕ 1 ⊕ 1 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 0 ⊕ 1 ⊕ 1 ⊕ 0 ⊕ 0 ⊕ 1 = 0

Таким образом, полином Жегалкина будет равен:
Fж = 1 ⊕ Y ⊕ Z∧Y ⊕ Y∧X ⊕ Y∧U ⊕ X∧U ⊕ Z∧W∧Y ⊕ Z∧W∧X ⊕ Z∧Y∧X ⊕ Z∧Y∧U ⊕ Z∧X∧U ⊕ Z∧W∧Y∧U ⊕ Z∧W∧X∧U
Логическая схема, соответствующая полиному Жегалкина: