1. Lesson 1.1, Real Numbers
Evaluate: 1. 2. 3.
ANSWER

2. Check Homework

3. 1
256 4
289
324 9 16
361
400 25
441 36 1
484 49 2
529 64 4 81
576 8
100
625 16
676
121 32
144
729 64
784
169
128
196
841
256
900
225
512

4. PRE Lesson 1.1-Tools of Algebra Objectives:
To review the set of Real Numbers
To review the properties of Algebra
To understand interval and set notation.

9. Sets & Elements A set is a collection of objects.
- the objects are called the elements of the set.
If S is a set, the notation of means that a is an element of S.

10. Sets & Elements means that b is not an element of S.
Ex1. If Z represents the set of integers, then
but

11. Union of Sets
If S and T are sets, then , represents their union. The union of sets consists of all elements in both sets.
Ex 2. Find if

12. Intersection of Sets
The intersection of S and T is the set consisting of all elements that are in both sets. It is only what they have in common.
Ex 3. Find if

13. Notation of Sets
The set A that consists of positive integers less than 7
Braces { }
Set-builder notation –
“A is the set of all x such that x is an integer and “
Interval notation –
Is a way to write the domain and the range.
(0,7)

14. b b

15. Ex 4. Find, , ,

16. Classwork: Book: pg.11, 36-60 even