I will mark as brainlist it's urgent plz answer fast!!!!
1.) State whether the following proposition is valid, invalid or unsatisfiable : (a => (b => c)) <=>
((a => b) => c)
2.)State De Morgan’s laws and prove any one of them algebraically
3.) From the premises x’=> y and y’=> z infer y’=>z.
Answers
Answered by
1
Answer
2.The complement of the union of two sets is equal to the intersection of their complements and the complement of the intersection of two sets is equal to the union of their complements. These are called De Morgan's laws. ... (i) (A U B)' = A' ∩ B' (which is a De Morgan's law of union).
Explanation:
Similar questions