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    Hello, I'm on the edexcel exam board and I'm retaking c2, can you use, say the quotient rule in c2 or will they not give you the marks ?
    Thanks


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    Yes but you won't need it.
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    (Original post by Joshmeid)
    Yes but you won't need it.
    Yeah I know but I have forgotten how to differentiate say: (x^2+3x-7) / x
    Without using that rule I know it's stupid but I can't remember


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    (Original post by betsickles)
    Yeah I know but I have forgotten how to differentiate say: (x^2+3x-7) / x
    Without using that rule I know it's stupid but I can't remember


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    Just split up the numerator and differentiate term by term.

    \dfrac{a+b+c}{d} = \dfrac{a}{d} + \dfrac{b}{d} + \dfrac{c}{d}
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    (Original post by Indeterminate)
    Just split up the numerator and differentiate term by term.

    \dfrac{a+b+c}{d} = \dfrac{a}{d} + \dfrac{b}{d} + \dfrac{c}{d}
    Yeah I did that but I've completely blanked at how to differentiate 7/x.. Do you do 7x^(-1) then do that?


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    (Original post by betsickles)
    Yeah I did that but I've completely blanked at how to differentiate 7/x.. Do you do 7x^(-1) then do that?


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    (Original post by betsickles)
    Yeah I did that but I've completely blanked at how to differentiate 7/x.. Do you do 7x^(-1) then do that?


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    yeah the only time that you wont see 1/x etc is on integration on C2 because that goes to lnx
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    Thanks everyone! C2 has a lot more chapters than I remember 2 years ago, darn gap year resits :/


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