min of (x-5)**4, h= 0.1
xmin= 4.9984375
fmin= 5.96046447754e-12
n= 86 , sx= 4.996875 , xx= 5.003125
 
min of (x-5)**4, h= 0.01
xmin= 4.9975
fmin= 3.90625000037e-11
n= 704 , sx= 4.995 , xx= 5.005
 
min of (x-5)**4, h= 2.0
xmin= 4.99993896484
fmin= 1.38777878078e-17
n= 47 , sx= 4.99987792969 , xx= 5.00012207031