Golden Section Search Method for One dimention optimization

It is the method to search for roots of a function within a certain interval with number of iterations by using the golden ratio.

There are 2 files one for minimum and one for maximum.

It will show graph for each iteration.

x is the interval

y is a function can be called using f(x)

1st iteration occurs outside the loop.

rest inside of it

xl= x Lower

xu= x Upper

x1 = 1st value

x2 = 2nd value