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Math Help - Differentiation help

  1. #1
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    Differentiation help

    I have to differentiate this function:
    f(x)=x + 2/3x^2-1

    if i can also get the forumla for differentiation that will also be a big help

    Thanks in advance
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  2. #2
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    Quote Originally Posted by excelsion View Post
    f(x)=x + 2/3x^2-1
    Please, use the appropriate brackets when posting.

    f(x)=\frac{x+2}{3x^2-1}\,?

    Then rewrite the function as (x+2)(3x^2-1)^{-1}. Now to take its derivative, use the product rule and remember the chain rule.
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  3. #3
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    sorry about that lemme try.....
    is it 9x^2+12x-1
    actually should it be
    6x+1?
    first time forgot the ^-1 from putting bottom up top
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  4. #4
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    Huh?

    May I ask if you write the full question please?
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  5. #5
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    it just says:
    Differentiate:
    f(x)= (x+2)/(3x^2-1)
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  6. #6
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    Okay. Anyway, I didn't understand the post #3

    Well then, follow the given instructions on post #2.
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  7. #7
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    i did that and got
    6x+1
    is that correct?
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  8. #8
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    I'm afraid it is not.

    You can use this useful tool to check your work.
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  9. #9
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    that suggest i use quotient rule but im not dividing two fuctions im just trying to find the derivative of that one fucntion
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