Curriculum
Course: Mathematics — Second Preparatory
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Curriculum

Mathematics — Second Preparatory

Unit 1: Real Numbers

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Unit 2: Algebra

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Unit 3: Geometry

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Unit 4: Statistics

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Text lesson

Intervals and Operations on Them

Mathematics — Second Preparatory

Intervals and Operations on Them

Lesson summary

Lesson summary

  • The closed interval [a, b] includes both endpoints. The open interval (a, b) includes neither.
  • A half-open interval includes exactly one of its endpoints.
  • The union ∪ contains all elements of both intervals. The intersection ∩ contains only the shared elements. The difference − contains the elements of the first interval that are not in the second.
  • After solving an inequality, write the solution as an interval.
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