Python Program for Sum of series with source code. This python project is useful for beginners and CBSE KV School Class 11 and Class 12 students computer science practical file and NIELIT O Level Programming and Problems Solving through Python (Module M3-R5).

**Objective : Write a program to input the value of x and n and print the sum of the following series in Python:**

**The series are given below :- **

**Series -1**

**Screen shot of source code**

**Explanation of Source Code **

x = float (input (“Enter value of x :”)) #float value ae like 4.09

n = int (input (“Enter value of n :”)) #integer value input

s = 0 #s for calculating sum

for a in range (n + 1) : # a loop

s += x**a #sum of series element will be done in this line loop

print (“Sum of series”, s)

## Download Source code of series 1- click here

**Output: Sum of series in python**

The output shell python window will be appeared like below:-

**Series 2**

**Screenshot of series **

## Download Source code of series 2- click here

**Explanation of Program **

x = float (input (“Enter value of x :”))

n = int (input (“Enter value of n :”))

s = 0

for a in range (n + 1) :

if a%2==0:

s += x**a** #this caluated sum when the power is even** else: s -= x**a # this is calculated when the power is odd

print (“Sum of series”, s) #sum of series element will be done in this line loop

**Output : Sum of series **

## Series 3

**Screenshot of source code series 3**

**Explanation of Python Program**

for a in range (n + 1) : #for loop starts

if a%2==0:

s += (x**a)/n** #odd values are negative even are postive value

** else: s -= (x**a)/n #sum of series element will be done in this line loop

print (“Sum of series”, s)

x = float (input (“Enter value of x :”))

n = int (input (“Enter value of n :”))

s = 0

## Download Source code of series 3- click here

**Output : Sum of Series Program :-**

## Series 4

**Screenshot of series 4 source code**

**Explanation of Python Program**

x = float (input (“Enter value of x :”))

n = int (input (“Enter value of n :”))

s = 0 #inital value of sum

a=1 #initial value of a

fact=1 #factorial 1

for a in range (1,n + 1) : #for loop starts

fact=fact*a

if a%2==0:

s += (x**a)/fact ** #sum of series element will be done in this line loop

**else: **

**s -= (x**a)/fact #sum of series element will be done in this line loop

print (“Sum of series”, s)

## Download Source code of series 4- click here

**Ouput of Sum of series in python**

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