9000063105
Level:
B
Differentiate the following function.
\[
f(x) = \frac{\sqrt{x} - 1}
{\sqrt{x} + 1}
\]
\(f'(x) = \frac{1}
{\sqrt{x}(\sqrt{x}+1)^{2}} ,\ x > 0\)
\(f'(x) = \frac{\sqrt{x}}
{(\sqrt{x}+1)^{2}} ,\ x > 0\)
\(f'(x) = \frac{2}
{x(\sqrt{x}+1)^{2}} ,\ x > 0\)
\(f'(x) = \frac{1}
{(\sqrt{x}+1)^{2}} ,\ x > 0\)