- #1
kwikness
- 17
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Homework Statement
Find the Derivative Function of (4x - x[tex]^{2}[/tex])
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..
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