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JEE Main & Advanced Mathematics Differentiation Question Bank Numerical Value Type Questions - Differentiation

  • question_answer
    If \[5f\left( x \right)+3f\left( 1/x \right)=x+2,\] then find \[\frac{d}{dx}\left( x.\,f\left( x \right) \right)\] at \[x=1.\]

    Answer:

    0.87


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