Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
De Morgan's Laws
Continuing with the relationship between ∧ and ∨, we can also use De Morgan's Law to rearrange sentences involving negation in conjunction with these connectives. Actually, there are 2 equivalences which taken as a pair are called De Morgan's Law:
¬(P ∧Q) ≡ ¬P ∨¬Q
¬ (P ∨ Q) ≡ ¬P ∧ ¬Q
These are essential rules and it is good spending some time thinking regarding why they are true.
Contraposition
The contraposition equivalence is following:
P -> Q ≡ ¬Q -> ¬P
At first, this can seem a little strange because it seem that we have said nothing in the first sentence regarding ¬Q, soin the second sentence how can we infer anything from it? However, imagine we know that P implies Q, and we saying that Q was false. In this case, if we were to imply that P was true because we know that P implies Q, we also know that Q is true. But Q was false .So we cannot possibly denote that P is true, which means that we ought to imply that P is false (because we are in propositional logic, so P might be either true or false). This argument shows that we may replace the first sentence by the second one, and it is left as aworkout to construct a similar argument for the vice-versa part of this equivalence.
Likewise to arrays but is preferred over an array due to of the following reasons. 1. A collection objects uses less Memory than an array. 2. It gives methods to add and dele
Describe Real and protected mode: Operation of Real mode interrupt: When microprocessor completes executing the current instruction, it concludes whether an interrupt is act
Adavantages and disadvantages of compilers and interpreters
The chief reason why digital computers use complemented subtraction is that it ? Ans. By using complemented subtraction method negative numbers can easily be subtracted.
Determine about the Security Policy In the United States, the government has a separate organisation looking after the security measures and providing guidelines to all departm
n=(x*2)/(1=0) the value x=0 and is used to stop the algerithin.The calculation is repeated using values of x=0 is input. There is only a need to check for error positions. The va
State Disadvantages of object oriented analysis design You know that OO methods only create functional models within objects. There is no place in methodology to design a compl
Explain SNMP (simple network management protocol). Once SNMP is used the management station sends a request to an agent asking this for commanding or information this to update
Q. Describe about Immediate Addressing mode? When an operand is interpreted as an immediate value for example LOAD IMMEDIATE 7 it is actual value 7 which is put in CPU register
Define variants of Turing Machine? Variants are Non deterministic turing machine. Mutlitape turing machine. Enumerators
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd