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

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What is the domain of (f(x)=\sqrt{10-2x})?

Answer and explanation

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

For the square root, (10-2x \ge 0), so (x \le 5). In exams dividing by a negative coefficient reverses the inequality.

Related tags

Real-Valued-Functions Domain 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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