Hello!
Suppose i have two functions f(x) > g(x). I need that f(x) - g(x) = 0 (well, as close as possible to zero) from some point x* on. Does anyone know a condition to guarantee that?
Thanks in advance,
A.
The solution to your problem is the value x that minimizes the quantity...
$\displaystyle e(x) = f(x) - g(x)$ (1)
... which is one of the numbers $\displaystyle x$ that satisfies the equation...
$\displaystyle e^{'} (x)=0$ (2)
... with the further condition...
$\displaystyle e^{''} (x) > 0$ (3)
Kind regards
$\displaystyle \chi$ $\displaystyle \sigma$