Multiple Choice Questions on Is f R rarr R f x log x rsquo f rsquo be a function or not ........ for NDA Exam Preparation

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Multiple Choice Questions

Is f R rarr R f x log x rsquo f rsquo be a function or not ........

Mathematics (NDA) Set theory
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    Is f:R →R , f(x) = log x ,’f’ be a function or not ? 

    f is a function  

    Incorrect Answer

    f is not a function  

    Correct Answer

    f is not defined  

    Incorrect Answer

    None of these  

    Incorrect Answer
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    Explanation:

    Since , 0 ∈R  and f(0) = log 0 =   ∞  ∉ R. 

    Thus , f: R→  R  , f(x) = log x , is not a function . 

    By: bhavesh kumar singh
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