2. State whether TRUE or FALSE that the relation Q is refexive and transitive on the...
10. TRUE or FALSE: Write TRUE if the statement is always true; otherwise, write FALSE. _a. {0} c{{0}, {{0}}} _b. Ø $ ({1, 2}), the power set of {1,2} c. If5<3 then 8 is an odd integer. d. The relation R = {(a,b), (b,a)} is symmetric but not transitive on the set X = {a,b}. e. The relation {(1,2), (2,2)} is a function from A={1,2} to B={1,2,3} _f. If the equivalence relation R = {(1,1), (2,2), (3,3), (4,4), (1,3), (3,1),...
Determine whether the relation R on the set of all real numbers is reflexive, symmetric, antisymmetric, and/or transitive, where (x, y) ∈ R if and only if a) x + y = 0 b) x= ±y. c) x-y is a rational number. d) = 2y. e) xy ≥ 0. f) xy = 0. g) x=l. h) r=1 or y = 1
ntifiers , Counterexamples, Disproof (#9, 15 pts) #9. For each statement, state whether the statement is true or false. If false, explain; provide a counterexample as appropriate or a careful explanation. (If true, no explanation expected) (a) n in N, n+23 ≥n3+8. (b) x in R, x+23 ≥x3+8. (c) n in N, 4n + 1 is prime. (d) x, y in R, if |x| < |y|, then x2 < xy. (e) m in N such that n in N, m...
Show if the statements are true or false with reasoning or counterexamples i. The relation defined on Z is an equivalent relation. ii. The relation R {(x,y) R x R : y Z) on R is A. symmetric, B. reflexive, C. transitive.
(a) State whether the following statement is true or false. The follow set is a subspace of P2, where P2 is the set of all polynomials over the real numbers of degree 2 or less. W={p € P2 :p (3)=0} O True O Fale In the essay box below, if it is true, prove that W is closed under scalar multiplication. Otherwise, give an explantion why the statement is false. XDX HE Editor A-AIBIU S *** Styles Font Size Words:...
5. Determine whether the following statements are True or False. Justify your answer with a proof or a counterexample as appropriate. (a) The relation S on R given by xSy if and only if X – Y E R – N is an equivalence relation.
discrete maths 2. (Lewis, Zar 14.7) Determine whether each of the following relations is transitive, symmetric, and reflexive and why: (a) The subset relation (b) The proper subset relation (c) The relation R on Z, where R(a, b) if and only if b is a multiple of a (d) The relation R on ordered pairs of integers, where R(<a,b>,<c,d >) if and only if ad-bc.
For each of the following relations on the set of all real numbers, decide whether or not the relation is reflexive, symmetric, antisymmetric, and/or transitive. Give a brief explanation of why the given relation either has or does not have each of the properties. (x, y) elementof R if and only if: a. x + y = 0 b. x - y is a rational number (a rational number is a number that can be expressed in the form a/b...
1) Let R be the relation defined on N N as follows: (m, n)R(p, q) if and only if m - pis divisible by 3 and n - q is divisible by 5. For example, (2, 19)R(8,4). 1. Identify two elements of N X N which are related under R to (6, 45). II. Is R reflexive? Justify your answer. III. Is R symmetric? Justify your answer. IV. Is R transitive? Justify your answer. V.Is R an equivalence relation? Justify...
(b) In each case below, state whether the statement is true or false. Justify your answer in each case. (i) A+B is an invertible 2×2 matrix for all invertible 2×2 matrices A, B. [4 marks] (ii) If A is an n×n invertible matrix and AB is an n×n invertible matrix, then B is an n × n invertible matrix, for all natural numbers n. [4 marks] (iii) det(A) = 1 for all invertible matrices A that satisfy A = A2....