# Math Help - Solving an equation

1. ## Solving an equation

Hi, I have this equation

$x.f(x)=A$

where $f(x)$ is a complicated function of $x$ and $A$ is constant. Is there any simple way to find $x$? At the moment I use trial and error to find $x$. Thanks.

2. ## Re: Solving an equation

You could use a root-finding technique such as Newton's method to approximate x.