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OpenStudy (anonymous):
Differentiation Problem Question inside
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OpenStudy (anonymous):
\[f \prime(x) = \lim_{\Delta x \rightarrow 0} \frac{\frac{ 4 }{ \sqrt{x+\Delta x} } - \frac{ 4 }{ \sqrt{x} }}{\Delta x}\]
OpenStudy (anonymous):
I'm not sure how to simplify the numerator
OpenStudy (agent0smith):
Simplify it by combining the fractions, and you may also want to rationalize the denominators.
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