\frac{f(x+h) - f(x)}{h} = \frac{A}{\sqrt{Bx + Ch} + \sqrt{x}}, where A, B, and C are constants. (Note: It's possible for one or more of these constants to be 0.) Find the constants.\newline A = 3, B = 1, and C = 1.\newline Use your answer from above to find $f'(x) = \lim_{h \to 0} \frac{f(x+h) - f(x)}{h} = \frac{3}{\sqrt{x}}.$ \newline Finally, find each of the following:\newline $f'(1) = \text{ } , f'(2) = \text{ } , and f'(3) = \text{ }$