lesson_6_ex_2_17_18

# -*- coding: utf-8 -*-
"""
Created on Mon Apr 16 18:23:58 2018

@author: stkarlos
"""
#compute the sum S = 2^5 + 4^8 - 6^11 + 8^14 - ... + 20^32
s = 2**5
j = 8
k = 2
for i in range(4,21,2):
  print 'the current term is: %d ** %d' %(i,j)
  s = s + (i ** j) * (-1) ** k
  j = j + 3
  k = k + 1
print s
print 'telos for'
print
print "##############"
print
s1 = 2**5
j = 8
k = 2
i =  4 #1o simeio
while i <= 20 : #3o simeio
  print 'the current term is: %d ** %d' %(i,j)
  s1 = s1 + (i ** j) * (-1) ** k
  j = j + 3
  k = k + 1
  i = i + 2	 #2o simeio
print s1
print 'telos while'

 

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