Calculus: Differentiation

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• April 22nd 2010, 09:01 AM
Mscscgrad2011
Calculus: Differentiation
1. State the definition of the derivative, and give two interpretations of it.
2. Find the values of x at which the curve y= f(x) has a horizontal tangent.
If you can help me, I would gradually appreciate it (Angel)
• April 22nd 2010, 01:04 PM
Diemo
1) Google it. Think about the definition.

2) This question makes no sense. You get a horizontal tangent when $\frac{dy}{dx}=0$. To work it out the function $y=f(x)$ has to be known (I think).
• April 26th 2010, 02:48 PM
Mscscgrad2011
I did find the first one but I am still lose on the second (Wondering)
• April 27th 2010, 04:13 AM
Diemo
There is some information missing.

The curve f(x) has horizontal tangent when its derivative is zero.