谓词公式"xP(x,y)Ù$t(Q(t,z)→"x$yR(x,y,t))中量词$t的辖域是()
A: $t(Q(t,z)→"x$yR(x,y,t))
B: Q(t,z)→"x$yR(x,y,t)
C: "x$yR(x,y,t)
D: Q(t,z)
A: $t(Q(t,z)→"x$yR(x,y,t))
B: Q(t,z)→"x$yR(x,y,t)
C: "x$yR(x,y,t)
D: Q(t,z)
举一反三
- 谓词公式”x(P(x)Ú $yR(y))→Q(x)中量词”x的辖域是() A: P(x)Ú $yR(y) B: P(x) C: $yR(y) D: (P(x)Ú $yR(y))→Q(x)
- “有的投票人(T(x))赞成(Z(x,y))所有的侯选人(H(y))”的谓词公式是 A: x(T(x)∧y(H(y)→﹁Z(x,y)) B: x(T(x)∧y(H(y)→Z(x,y)) C: x(T(x)∧y(H(y)→Z(x,y)) D: x(T(x)∧y(H(y)∧Z(x,y))
- 谓词公式(∀x(P(x)∨∃yR(y)))→Q(x)∧R(x)中量词∀x的辖域是 . A: P(x)∨∃yR(y) B: P(x) C: (P(x)∨∃yR(y))→Q(x) D: (∀x(P(x)∨∃yR(y)))→Q(x)∧R(x)
- 请将用户输入的x,y,z三个整数按照从小到大的顺序排列 main() { int x,y,z,t; scanf("%d,%d,%d",&x,&y,&z); if(x>y) { t=y;y=x;x=t;} if(____>z) {t=z;z=x;x=t;} if(____>z) {t=y;y=z;z=t;} printf("small to big: %d,%d,%d\n",x,y,z); }
- 谓词公式∀x(P(x)∨∃yR(y))→Q(x)中量词∀x的辖域是() A: ∀x(P(x)∨∃yR(y)) B: P(x) C: P(x)∨∃yR(y) D: P(x),Q(x)