Write a program to print the sum of the series 1-x²/4! + x3/6! –x4/8! + x5/10!......xn/(2n)!- exponential series.

Q. Write a program to print the sum of the series 1-x²/4! + x3/6! –x4/8! + x5/10!......xn/(2n)!- exponential series.

Answer :-

import math
x = int(input("Enter x :-"))
n = int(input("Enter n :-"))
sum = 1

for i in range(2,n+1):
    if i % 2 == 0:
        num = (x ** i) / math.factorial( 2*i )
        sum -= num
    else :
        num = (x ** i) / math.factorial( 2*i )
        sum += num
print("Sum : ", sum)

Output :-

Enter x :-2
Enter n :-3
Sum :  0.8444444444444444
>>>
Enter x :-5
Enter n :-50
Sum :  0.1172728764571665
>>>