Solution to A. List the members of the following sets 1. {x| x is real numbers and … - Sikademy
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Archangel Macsika

A. List the members of the following sets 1. {x| x is real numbers and x2 = 1} 2. {x| x is an integer and -4 < x ≤ 3} B. Use set builder notation to give description of each of these sets. 1. {a, e,i ,o, u} 2. {=2, -1, 0, 1, 2} C. Let A= (a, b, c), B = (x, y) and C = (0, 1) Find: 1. A U C 2. C x B 3. B – A 4. (A ∩ C) U B D. Find these terms of the sequence (An}, where An = 2(3)n + 5 1. A0 2. A5 3. A3 4. 8th term 5. 2nd term 6. Sum of the sequence E. Given the following set: 2. X = {-1, 0, 1, 2, 3, 4, 5} defined by the rule (x, y) ∈R if x ≤ y F. List the elements of R G. Find the domain of R H. Find the range of R I. Draw the digraph J. Properties of the Relation

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Solution.

A.

\{x| x \text{ is real numbers and } x^2=1\}=\{-1,1\}.

\{x| x \text{ is an integer and } -4<x\leq 3\}=\{-3,-2,-1,0,1,2,3\}.

B.

\{a,e,i,o,u\}=\{x| x\text{ is vowels letters, without 'y' }\}.

\{-2,-1,0,1,2\}=\{x \in Z| |x|=2\}.

C.

A=(a,b,c), B=(x,y), C=(0,1).

A \text{U} C=\{a,b,c,0,1\}. \newline C \times B=\{(0,x),(0,y),(1,x),(1,y)\}. \newline B-A=\{x,y\}. \newline (A \cap C)\text{U} B=\{x,y\}.

D.

A_n=2\cdot 3^n+5. \newline A_0=7. \newline A_5=491. \newline A_3=59. \newline A_8=13127. \newline A_2=23. \newline \sum A_n=\infty.

E.

X=\{-1,0,1,2,3,4,5\}. \newline R=\{(x,y)|x\leq y\}.

F.

R=\{(-1,0),(-1,1),(-1,2),(-1,3),(-1,4),(-1,5),\newline (0,1),(0,2),(0,3),(0,4),(0,5),(1,2),(1,3),(1,4),(1,5),(2,3),(2,4),\newline (2,5),(3,4),(3,5),(4,5),(5,5),(4,4),(3,3),(2,2),(1,1),(0,0),(-1,-1)\}.

G.

Domain(R )=\{-1,0,1,2,3,4,5\}.

H.

Range(R )=\{-1,0,1,2,3,4,5\}.

I.

J.

Properties of the Relation:

Reflexivity

Irreflexivity

Symmetry

Antysymmetry

Asymmetry

Transitivity.

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Question ID: mtid-5-stid-8-sqid-3306-qpid-2005