Question

(Python)Find sum of factorial series: x-x^2/2!+X^4/4!-x^6/6!.......n

Answer 1

Question :-

• WAP in python to find the sum of the series

x - x^2/2! + x^4/4! - x^6/6!....nth term

Code Logic :-

• Even terms are negative and odd terms are positive
• numerator = x raised to power i
• denominator= factorial of i

Variable Description :-

1. f:- to calculate factorial of i
2. j:- loop variable
3. i:- loop variable
4. n:- to Accept no. of terms from the user
5. x:- to accept value of 'x' from the user
6. s:- to calculate sum

Code Explanation :-

1. the program accepts the no. of terms and the value of x from the user
2. f and s are initialized to 1 and 0 respectively
3. Then the program runs i Loop from 1 to n
4. Then it run j loop from 1 to i to calculate factorial of I
5. if I loop Value is even then it substract the terms from its previous value
6. else if I loop value is odd then it adds the terms
7. when I loop value becomes greater than n then loop terminates
8. sum gets printed