(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find the Derivative Function of (4x - x[tex]^{2}[/tex])

3. The attempt at a solution

using formula:

[tex]

\frac{dy}{dx} = \frac{f(x + \Delta x) - f(x)}{\Delta x}

[/tex]

[tex]

\frac{4(x + \Delta x) - (-x^{2})}{\Delta x}

[/tex]

[tex]

\frac{4x + 4(\Delta x) + x^{2}}{\Delta x}

[/tex]

Not sure where to go from here..

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Need Help With Derivative Function

**Physics Forums | Science Articles, Homework Help, Discussion**