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Class 11 Mathematics Relations and Functions Real-Valued Functions, Their Domain and RangeMedium

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What is the range of (f(x)=4-\sqrt{x-5})?

Answer and explanation

Correct answer: ((-\infty,4])

(\sqrt{x-5}\ge0), so (4-\sqrt{x-5}\le4). In exams if a minus sign is before the square root, outputs go downward.

Related tags

Real-Valued-Functions Range Square-Root Real Valued Functions Their Domain And Range Real Valued Functions Their Domain And Range Relations And Functions Mathematics Class 11 Mcq

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