ser1sum.py

# Python program to find the sum of the series 1-x2/2!+x4/4!-x6/6!+...+xn/n!

# n = int(input("Enter the term: "))
# x = int(input("Enter value of x: "))
# k = 2
# sum = 1
# sign = 1
# m = 2

# for i in range(1, x+1):
#           fact = 1
#           for j in range(1, m + 1):
#                     fact = fact * j
#                     sign = -sign
#                     sum += sum + ((x**k)/fact)*sign
#                     k += 2
#                     m += 2
# print ("Sum = ", sum)

# using function
def sum_of_series(n, x):
          k = 2
          sum = 1
          sign = 1
          m = 2
          
          for i in range(1, n+1):
                    fact = 1
                    for j in range(1, m + 1):
                              fact = fact * j
                    sign = -sign
                    sum += sum + ((x**k)/fact)*sign
                    k += 2
                    m += 2
          
          return sum

n = int(input("Enter the number of terms: "))
x = int(input("Enter the value of x: "))
result = sum_of_series(n, x)
print("Sum =", result)