Multiple Choice Questions on If f x defines a function of R then what is its domain ........ for NDA Exam Preparation

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Multiple Choice Questions

If f x defines a function of R then what is its domain ........

Mathematics (NDA) Relations and Functions
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    If f (x) = \frac{\sqrt{x-1}}{x-4}  defines a function of R, then what is its domain?

    (−∞,4)∪(4,∞)

    Incorrect Answer

    [4,∞]

    Incorrect Answer

    (1,4)∪(4,∞)

    Incorrect Answer

    (1,4)∪(4,8)

    Correct Answer
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    Explanation:
    f(x) is defined if x≥1and x≠4
    ∴ Domain =(1,4)∪(4,8)

    By: Munesh Kumari
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