Let's find the inflection points, we'll need to solve the equation for this
$$\frac{d^{2}}{d x^{2}} f{\left(x \right)} = 0$$
(the second derivative equals zero),
the roots of this equation will be the inflection points for the specified function graph:
$$\frac{d^{2}}{d x^{2}} f{\left(x \right)} = $$
the second derivative$$\frac{\left(\frac{2}{x^{2}} + \frac{\frac{1}{x} + \frac{1}{x^{\frac{3}{2}}}}{\sqrt{x}} + \frac{3}{x^{\frac{5}{2}}}\right) e^{- \sqrt{x}}}{4} = 0$$
Solve this equationSolutions are not found,
maybe, the function has no inflections