Why output this short code is over 1? What's the problem?

Question

https://code.sololearn.com/cO1kHoxFZNEu/?ref=app

Answer 1

add "f = lambda sigma: " before the line, and call the function with "f(x)", where x is your variable

and... i tried 1~20, and it's smaller than 1 and decreases🤔

Answer 2

I'm confused.
1. You didn't import math.
2. If sigma is a variable, you never assigned it any value.
3. You didn't print anything, so there's not supposed to be any output.

Answer 3

What is sigma?

Answer 4

Kishalaya Saha i tried 1) and 3) on my own as we can understand but 2) hurts more.

Answer 5

Sigma is a variable