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

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What is the domain of (f(x)=\frac{1}{\sqrt{x^2-25}})?

Answer and explanation

Correct answer: ((-\infty,-5)\cup(5,\infty))

The square root is in the denominator, so (x^2-25>0) is required. In exams do not include equality for a denominator square root.

Related tags

Real-Valued-Functions Domain Radical-Denominator 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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