Section 4.2 Intersections, Unions & Compound Inequalities

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## Section 4.2 Intersections, Unions & Compound Inequalities

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**Section 4.2Intersections, Unions & Compound Inequalities**• Using Set Diagrams and Notation • Intersections of Sets • Conjunctions of Sentences and • Unions of Sets • Disjunctions of Sentences or • More Interval Notation • Specifying Domains 4.2**Sets and Compound Inequalities**Compound Inequalities: Two inequalities joined by and or orIntersectionUnion Members in Common All Members in Both “and” “or” 4.2**Intersection: Members in Common**( ) ( ) 4.2**Solve & Graph**[ ) 4.2**(both must be true)Solve & Graph a**Conjunction and [ ( ( 4.2**(both must be true)Solve & Graph a**Disjoint Conjunction ( ) 4.2**Union: All Members in Both Sets**) ( ( ) 4.2**(either can be true)Solve & Graph a Union**or ) [ [ ) 4.2**Try another … (either can be true)Solve & Graph a**Union or ( ) ) ( 4.2**The Biggest Possible Solution**) [ 4.2**Expressing DomainsWith Interval Notation**( ) [ 4.2**Where do we go from here? …**• Section 4.3 Absolute Value Equations & Inequalities 4.2