F=(x1+¬x2+x3)*(¬x1+x2+x3)*(¬x1+¬x2+¬x3)
A=(x1+¬x2+x3)
B=(¬x1+x2+x3)
C=(¬x1+¬x2+¬x3)
F=A*B*C
таблица истинности
x1 x2 x3 A B C F
0 0 0 1 1 1 1
0 0 1 1 1 1 1
0 1 0 0 1 1 0
0 1 1 1 1 1 1
1 0 0 1 0 1 0
1 0 1 1 1 1 1
1 1 0 1 1 1 1
1 1 1 1 1 0 0
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ответ
x1 x2 x3 F
0 0 0 1
0 0 1 1
0 1 1 1
1 0 1 1
1 1 0 1