# L-31 MCS 260 Wed 7 Nov 2007 : samplefun.py
#
# Sampling of a function given by the user.

from math import *
print 'sampling f in [a,b]'
e = raw_input('f(x) = ')
a = float(input('a = '))
b = float(input('b = '))
N = input('#samples = ')
dx = (b-a)/(N+1)
x = a
S = []
for k in range(0,N):
   y = eval(e)
   S.append(y)
   print 'x = %.4e' % x + \
      '  f(x) = %.15e' % y
   x = x + dx
print 'min = %.15e' % min(S)
print 'max = %.15e' % max(S)