﻿ explain why (a ? b) ? (c ? d) and a ? (b ? c) ? d are not the same

# explain why (a ? b) ? (c ? d) and a ? (b ? c) ? d are not the same

Youll do better exhibiting an element of one set and explaining why its not an element of the other. (Also, the statement isnt strictly true you need some nonemptiness, because the two are the same when ABCDemptyset.) d) Explain why your argument in c) does not apply to 3-CNF. For 3-CNF, each clause has an additional literal which will make the termination time in the worst case scenario different than the termination time for 2-CNF clauses. Since the termination times are different, the same formula cannot be used for 1. a. (5) Explain why the following grammar is not LL(k) for any kAnd consider that FOLLOW(A) FOLLOW(B) a,b. In the first state we have a reduce/reduce conflict, since the FOLLOW of A and B are same on the input terminal a of the token we dont know whether to retrace the rule A e or B Section 5.4 p244 Problem 1. In each part, explain why the given vectors do not form a basis for the indicated vector space.(b) One method is to follow the same procedure as for (a). The solutions for the equation x y 0 can be described by. It was a life that would probably remain exactly the same until she could claim her pension in another thirty years. The trouble with Georgina was that she wasWrite a letter of complaint to the restaurant manager explaining why you were dissatisfied and asking for an explanation and an apology. iii) Is c in the same plane as a and b?Explain why or why not A,B,C,D are coplanar. 12. Find all the values of m so that 2i 3j, 6i mj mk, 3j 4k is a dependent set of vectors. The theory of sets is a language that is perfectly suited to describing and explaining all types of mathematical structures.It is important to understand that P Q is not the same as Q P. To see why, suppose that a is some integer and consider the statements. Explain why or why not. ANSWER: No, R is not in BCNF since the functional dependency CD->A violates the condition CD is not a superkey of R.Since R is not the same as R (2nd and 3rd tuples are introduced after join), this decomposition is not lossless.

Exercise 1: Compute B.A and compare with A.B. Can you see why these numbers are the same in this example and will always be the same for any choice of A and B?Tell how this explains why for the special A, B, C, D above, A.D A.(2B - C). 4.