What are the algorithms for numerical minimization of a function of one variable given on the whole space?

Question

Mathematics

We need to find numerically argmin f(x) functions of one variable. How to do it?

Answer 1

In your case, no way.
On an infinite interval, knowing nothing about the properties of the function - no way.
Can help:
1. information about its smoothness
2. guesses about the number of minumums
3. knowledge about its behavior at infinity
......