What bracket is used to denote a number is excluded from a domain?

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SUMMARY

The discussion clarifies the notation used to denote inclusion and exclusion of numbers in a domain. Specifically, parentheses "(" and ")" indicate that a number is excluded from the domain, while brackets "[" and "]" signify that a number is included. An example provided is the unit circle, where the angle theta is represented as θ ∈ [0, 2π), indicating that 0 is included and 2π is excluded from the domain.

PREREQUISITES
  • Understanding of mathematical notation for intervals
  • Familiarity with the concept of domains in mathematics
  • Basic knowledge of trigonometric functions
  • Awareness of the unit circle in trigonometry
NEXT STEPS
  • Study interval notation in mathematics
  • Learn about the properties of the unit circle
  • Explore the implications of domain restrictions in trigonometric functions
  • Review examples of included and excluded values in various mathematical contexts
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Students studying mathematics, particularly those focusing on trigonometry and interval notation, as well as educators teaching these concepts.

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When asked to find the domain, what bracket is used to denote that a number is excluded or included in the domain, ( or [?
 
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( or ) means excluded, [ or ] means included.
Example: For The Unit cirlce \theta \in [0,2\pi)
 
Thanks a bunch nicksauce!
 

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