APFIVE Evaluating a Derivative at a Point
Let $f$ be the function given by $$\displaystyle f(x) = x^{\frac{3}{2}} - \frac{6}{\sqrt{x}}$$. What is the value of $f'(4)$?
A
$$\displaystyle \frac{21}{8}$$
B
$$\displaystyle \frac{27}{8}$$
C
$$\displaystyle \frac{15}{4}$$
D
$$\displaystyle \frac{9}{4}$$
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