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  1. Interval Notation - Definition, Examples, Types of Intervals

    • Suppose we want to express the set of real numbers{x |-2 < x < 5} using an interval. This can be expressed as interval notation (-2, 5). The set of real numbers can be expressed as (-∞, ∞). Intervals can b… 展开

    Open Interval

    This type of interval does not include the endpoints of the inequality. For example, the set {x | -3 < x < 1} does not include the endpoints, -3 and 1. This is expressed using open inter… 展开

    Cuemath
    Closed Interval

    This type of interval includes the endpoints of the inequality. For example, the set {x | -3 ≤ x ≤ 1} include the endpoints, -3 and 1. This is expressed using closed interval notation: [-3,1].… 展开

    Cuemath
    Half-Open Interval

    This type of interval includes only one of the endpoints of the inequality. For example, the set {x | -3 ≤ x < 1} include the endpoint -3. This is expressed using half-open interval not… 展开

    Cuemath