# Calculus - Simplifying equation (possible error)

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• Jan 23rd 2013, 12:12 PM
DaveG82
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.

Attachment 26681

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

Many thanks in advance.
• Jan 23rd 2013, 12:38 PM
Plato
Re: Calculus - Simplifying equation (possible error)
Quote:

Originally Posted by DaveG82
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.

Attachment 26681

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

Yes it should be $\displaystyle \frac{h(4+h)}{h}$.
• Jan 23rd 2013, 06:32 PM
Prove It
Re: Calculus - Simplifying equation (possible error)
Am I correct in assuming that \displaystyle \displaystyle \begin{align*} f(x) = x^2 \end{align*}?
• Jan 24th 2013, 01:37 PM
DaveG82
Re: Calculus - Simplifying equation (possible error)
Hi, yes it is x^2