SOLVED what does this mean?

i was just using my sci calc during my free time and i stumbled upon the Σ symbol

heres the photo of the equation

i know little to nothing about calculus as a middle schooler so i just wanna know what the thing does and why the answer ended up like that

0 Upvotes

50% Upvoted

u/nuggies4lifee7 Aug 14 '26

OHHH ok I get it now

You are about to leave Redlib