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Math Help - Calculus - Simplifying equation (possible error)

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    Calculus - Simplifying equation (possible error)

    I have a Calculus book with the following equation which is then simplified down but I think that there might be an error.

    I have pointed out where I think the error is and what I think the correction should be.

    Calculus - Simplifying equation (possible error)-calculus.png

    Can anyone please confirm this for me. If I am wrong could you please tell me why.

    Many thanks in advance.
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  2. #2
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    Re: Calculus - Simplifying equation (possible error)

    Quote Originally Posted by DaveG82 View Post
    I have a Calculus book with the following equation which is then simplified down but I think that there might be an error.

    I have pointed out where I think the error is and what I think the correction should be.

    Click image for larger version. 

Name:	calculus.png 
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ID:	26681

    Can anyone please confirm this for me. If I am wrong could you please tell me why.

    Yes it should be \frac{h(4+h)}{h}.
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    Re: Calculus - Simplifying equation (possible error)

    Am I correct in assuming that \displaystyle \begin{align*} f(x) = x^2 \end{align*}?
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    Re: Calculus - Simplifying equation (possible error)

    Hi, yes it is x^2
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