I have a question about how far away will the program evaluate the fun from the initial point. I have a function which only exits in a certain range around the initial point(but big enough in my sense, e.g. starting at .1, requiring >0). However, the program will break down for evaluating out of range points after a fare amount of calculation. Could you please give me some idea about why this happens?
(BTW, my function has some randomness, does this matter?)