Sigma (Σ) is the Greek letter for 's.' It's used in math by the term "the sum of," (summation) and has grown in popularity as being the "main symbol" for calculus. Despite its direct correlations, it's just multiplication, (or repeated addition) but with a twist.
A simple example of sigma in action is;
5
Σ x
x=1
Despite looking so ominous, all it means is 1+2+3+4+5, or 15.
It works by taking the first value, x, (on the bottom), and putting it into the equation on the left. Then, it adds one to x and puts it into the equation again. It does this over and over again until x is equal to the upper bound. Finally you get the equation 1+2+3+4+5, which equals 15
now for a harder example;
50
Σ (((((x^17)/250))*0.002947)/18646)^2
x=1
DID YOU REALLY THINK I WAS GOING TO EXPLAIN THAT SHIT TO YOU?!?! F**K. NO.
