Please solve it using python and provide the code $6\mathrm{.}27$ Use the Newton$-$Raphson method to find the root of

$f(x)=e^{-0\mathrm{.}5x}(4-x)-2$

Employ initial guesses of $($a$)2,($b$)6,$ and $($c$)8.$ Explain your

results.