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1.u=f(x,y,z)
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2.P(x, f(A))∨Q(x)和 ¬Q(f(y))∨R(z)的消解式为A.P(x,f(A))∨R(z)B.P(x,f(A))∨Q(x)∨R(z), σ = {f(y)/x}C.P(f(y),f(A))∨
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3.(8-4-6)设 y x z = ,而 v u x + = , v u
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4.Using DeMorgan’s Law, write an expression for the complement of F if F(x,y,z) = xy xz yz.
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5.【单选题】P(x, f(A))∨Q(x)和 ¬Q(f(y))∨R(z)的消解式为A. P(x,f(A))∨R(z) B. P(x,f(A))∨Q(x)∨R(z), σ = {f(y)/x} C.
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6.(10)w三f(x,y,z),x=u v,y=u-v,z三,aua'auxw d T
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7.(3) f(x, y,z)= ry y = l,x y z= 0.
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8.设x=1,y=2,z=3,u=false,u=y>z^x!=z;结果为 【11】 。
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9.公式"x ( F(x,y,z ) → "y ( G(x,y,z) → "z H(x,y,z) ) )的前束范式为
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10.设代换 = {a/x, f(z)/y, y/z},δ= {b/x, z/y, g(x)/z}试计算 ○δ和δ○ 。