Summation Notation (Sigma Notation)

Has a base of the capital version of the greek letter "sigma"

When used in mathmatics, it looks like this

What does all of the stuff around it mean?

n=upper limit
i=1 = lower limit
= explicit formula =

EXAMPLE PROBLEM:

=5 + 7 + 9 + 11 = 32
^^^^^^
To do this on a calculator

• Sum(Seq(explicit formula, variable, lower limit, upper limit))
  

To get to Sum push List then go over to math

To get to seq push List then go over to OPS

When Dealing with an infinite upper limit:

it looks like this

FOR EXAMPLE

3 PROPERTIES OF SUMS

1.

2. & 3. (the same for adding and subtracting)

This is a good explanation of summation notation
http://www.columbia.edu/itc/sipa/math/summation.html