okay so i got a question conserning newton-raphson method to find a root to 4 d.p.

the equation is $\displaystyle e^x-3x = 0$ now i've got the equation

$\displaystyle x_{n+1} = x_{n} - \frac{f(x_{n})}{f'(x_{n}}$

i have been given the information to start with $\displaystyle x_{0} = 2.$

my question is how do i use the equation. I have no idea. I know what im looking for but i have no idea how to use the equation.

Cheers guys!