1
---------------
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2*\/ x *(1 + x)
$$\frac{1}{2 \sqrt{x} \left(x + 1\right)}$$
/1 2 \
-|- + -----|
\x 1 + x/
---------------
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4*\/ x *(1 + x)
$$- \frac{\frac{2}{x + 1} + \frac{1}{x}}{4 \sqrt{x} \left(x + 1\right)}$$
1 3 1
-------- + ---- + -----------
2 2 2*x*(1 + x)
(1 + x) 8*x
-----------------------------
___
\/ x *(1 + x)
$$\frac{1}{\sqrt{x} \left(x + 1\right)} \left(\frac{1}{\left(x + 1\right)^{2}} + \frac{1}{2 x \left(x + 1\right)} + \frac{3}{8 x^{2}}\right)$$