$$ineversf(x)= \frac{ 1 }{ 2 } + \sqrt{ x }$$
$f=-\frac{i\left(2\sqrt{x}+1\right)}{2e^{2}nrsvx}$
$x\neq 0\text{ and }r\neq 0\text{ and }v\neq 0\text{ and }n\neq 0\text{ and }s\neq 0$
$n=-\frac{i\left(2\sqrt{x}+1\right)}{2e^{2}frsvx}$
$x\neq 0\text{ and }f\neq 0\text{ and }r\neq 0\text{ and }v\neq 0\text{ and }s\neq 0$
