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Composing functions (article) | Khan Academy. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Precalculus.
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What is the domain of f ? Choose 1 answer: Choose 1 answer: (Choice A) − 5 ≤ x ≤ 4. A. − 5 ≤ x ≤ 4. (Choice B) The x -values − 5 , 1 , 3 , and 4.
Introducing intervals, which are bounded sets of numbers and are very useful when describing domain and range. We can use interval notation to show that a value falls between two endpoints. For example, -3≤x≤2, [-3,2], and {x∈ℝ|-3≤x≤2} all mean that x is between -3 and 2 and could be either endpoint.