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    Hi guys
    im doing this paper
    http://www.mei.org.uk/files/papers/C3_2014_June.pdf

    Im trying to differentiate the function in question 8 - where fx = x/(2+x^2)^-0.5
    When using the quotient rule, my 'u' would be x. But would my v be rt(2+x2)
    or v= (2+x^2)^-0.5 ????
    slightly confused

    thanks for help
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    The beauty of the quotient rule is that you can avoid differentiating negative powers.

    So your v = denominator = √(2+x^2)
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    (Original post by starwarsjedi123)
    Hi guys
    im doing this paper
    http://www.mei.org.uk/files/papers/C3_2014_June.pdf

    Im trying to differentiate the function in question 8 - where fx = x/(2+x^2)^-0.5
    When using the quotient rule, my 'u' would be x. But would my v be rt(2+x2)
    or v= (2+x^2)^-0.5 ????
    slightly confused

    thanks for help
    Just rt(2+x^2), the quotient rules takes the minus sign into account for you.
 
 
 
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