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If f(x) = √x + √(1 − x), what is its domain?

Answer and explanation

Correct answer: [0, 1]

Both radicands must be non-negative: x ≥ 0 and 1 − x ≥ 0, so x ≤ 1. The intersection is [0, 1]. The endpoints are included because a square root of zero is defined.

Related tags

DomainRadical FunctionsReal Valued FunctionsTheir Domain And RangeReal Valued Functions Their Domain And RangeRelations And FunctionsMathematicsClass 11 Mcq

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