(q∧r∧p)∨(q∧r∧¬p)化简成qrp形式
时间: 2024-03-31 07:39:01 浏览: 148
(q∧r∧p)∨(q∧r∧¬p) 可以使用分配律和合取范式进行化简:
(q∧r∧p)∨(q∧r∧¬p)
= (q∧r∧(p∨¬p)) ∨ (q∧r∧¬(p∧¬p)) (分配律)
= (q∧r∧1) ∨ (q∧r∧0) (p∨¬p = 1,p∧¬p = 0)
= qrp (合取范式)
因此,原命题可以化简为 qrp 的形式。
相关问题
(p→((¬r∧s)∨(r∧¬s)))∧(¬r∧q)∨(r∧¬q)∧(r→¬s)求主析取范式的详细过程
首先,我们需要将条件式转化为合取范式,即将它们转换为逻辑与的形式。具体步骤如下:
1. 将条件式中的蕴含符号转换为逻辑或和非运算的组合形式,即 p→q 转换为 ¬p∨q。
(p→((¬r∧s)∨(r∧¬s)))∧(¬r∧q)∨(r∧¬q)∧(r→¬s)
= (¬p∨((¬r∧s)∨(r∧¬s)))∧(¬r∧q)∨(r∧¬q)∧(¬r∨¬s)
2. 将条件式中的合取符号转换为逻辑或和非运算的组合形式,即 p∧q 转换为 ¬(¬p∨¬q)。
= ((¬¬p∧¬(¬r∧s)∧¬(r∧¬s))∨(¬¬p∧(¬r∧s)∨¬¬p∧(r∧¬s)))∧(¬¬r∨¬q)∨(r∧¬q)∧(¬¬r∨¬¬s)
3. 对条件式中的每个逻辑非运算符号应用德·摩根定律,并将条件式中的双重否定符号去除,即 ¬¬p 转换为 p。
= ((p∨(r∨¬s))∧(p∨(¬r∨s)))∧(r∨q)∧(¬r∨¬q)∧(r∨¬q)∧(¬r∨s)
4. 对条件式中的每个逻辑与运算符号应用分配律。
= ((p∧p)∨(p∧¬r)∨(p∧s)∨(r∧p)∨(r∧¬r)∨(r∧s))∧(r∨q)∧(¬r∨¬q)∧(r∨¬q)∧(¬r∨s)
5. 将条件式中的逻辑或运算符号转换为主析取范式,即将它们转换为逻辑或的形式。
= (p∧¬r∧s)∨(p∧r∧¬s)∨(r∧q)∨(¬r∧¬q∧r)∨(r∧¬q∧¬r)∨(¬r∧s)
因此,主析取范式为 (p∧¬r∧s)∨(p∧r∧¬s)∨(r∧q)∨(¬r∧¬q∧r)∨(r∧¬q∧¬r)∨(¬r∧s)。
Determine whether Player 1 has a winning strategy in the following finite Boolean games, where in both cases \mathrm{\Gamma}_1≔x1,x3 and Γ2≔x2,x4. \psi≔x1∧x3→¬x2∧¬x1→x1∧¬x2→x3∨x4 \psi≔x1∨¬x2∧x2∨x3∧¬x3∨¬x4∧¬x1∨¬x2∨x3∨x4
For the first game, we can construct the following truth table:
```
x1 | x3 | x2 | x4 | Player 1
---|----|----|----|----------
0 | 0 | 0 | 0 | 1
0 | 0 | 0 | 1 | 1
0 | 0 | 1 | 0 | 0
0 | 0 | 1 | 1 | 1
0 | 1 | 0 | 0 | 1
0 | 1 | 0 | 1 | 1
0 | 1 | 1 | 0 | 0
0 | 1 | 1 | 1 | 0
1 | 0 | 0 | 0 | 0
1 | 0 | 0 | 1 | 1
1 | 0 | 1 | 0 | 0
1 | 0 | 1 | 1 | 1
1 | 1 | 0 | 0 | 0
1 | 1 | 0 | 1 | 1
1 | 1 | 1 | 0 | 1
1 | 1 | 1 | 1 | 0
```
In this game, Player 1 wins if and only if the formula $\psi$ is true. From the truth table, we can see that $\psi$ is true for 8 out of the 16 possible assignments of values to the variables. Therefore, Player 1 has a winning strategy in this game.
For the second game, we can also construct a truth table:
```
x1 | x2 | x3 | x4 | Player 1
---|----|----|----|----------
0 | 0 | 0 | 0 | 0
0 | 0 | 0 | 1 | 1
0 | 0 | 1 | 0 | 0
0 | 0 | 1 | 1 | 1
0 | 1 | 0 | 0 | 1
0 | 1 | 0 | 1 | 1
0 | 1 | 1 | 0 | 1
0 | 1 | 1 | 1 | 1
1 | 0 | 0 | 0 | 1
1 | 0 | 0 | 1 | 0
1 | 0 | 1 | 0 | 1
1 | 0 | 1 | 1 | 0
1 | 1 | 0 | 0 | 0
1 | 1 | 0 | 1 | 1
1 | 1 | 1 | 0 | 0
1 | 1 | 1 | 1 | 1
```
In this game, Player 1 wins if and only if the formula $\psi$ is false. From the truth table, we can see that $\psi$ is false for 8 out of the 16 possible assignments of values to the variables. Therefore, Player 1 does not have a winning strategy in this game.
阅读全文
相关推荐
















