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

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If (f(x)=\sqrt{x+6}), what is (x) when (f(x)=4)?

Answer and explanation

Correct answer: (10)

(\sqrt{x+6}=4) gives (x+6=16), so (x=10). In exams check the answer in the original condition after squaring.

Related tags

Real-Valued-Functions Function-Equation Range 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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