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

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Which statement is correct for (f(x)=\sqrt{x^2+25})?

Answer and explanation

Correct answer: Domain (\mathbb{R}) and range ([5,\infty))

Since (x^2+25\ge25), (f(x)\ge5) and every real (x) is allowed. In exams first check the minimum value inside.

Related tags

Real-Valued-Functions Domain-Range Conceptual 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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