Σ⇐what is that and what does it mean?????
2 answers
It’s sigma. Means the sum of something
Sometimes it has a subscript and a superscrit attached to the right hand side.
That gives the range; i.e., the sum of whatever from here to there. The here is the low number (the subscript) and the high is the upper number (the superscript)
That gives the range; i.e., the sum of whatever from here to there. The here is the low number (the subscript) and the high is the upper number (the superscript)