Interval Notation
Interval Notation - Solve mathematical problems with step-by-step solutions.
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Updated January 2025
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Interval Notation Calculator
Convert inequalities to intervals
x
Interval Notation
- Parentheses `( )` are used for open intervals, meaning the endpoint is not included (corresponds to < or >).
- Square brackets `[ ]` are used for closed intervals, meaning the endpoint is included (corresponds to ≤ or ≥).
- Infinity `∞` always uses a parenthesis.
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