Anyone here have a TI-83 or TI-84 graphing calculator?

I'm trying to find a way to do "Sigma Notation" sums. I would think there should be a way that we could pull up a Sigma, give it a function with an interval of values, run it and get the sum.

Here's a simple example.

10
SIGMA n^2
n = 1

[Enter] should give me the sum total of 1 + 9 + 16 + ... + 100.

Is there something built-in, or do I need write and store a program in the calculator to do it?

__________________
~Jay~
Husband of ENS, father of J II. | Indian Trail, NC
disabled - cancer
Communicant Member, Precentor | Presbyterian Reformed Church of Charlotte, NC | Presbyterian Reformed Church

zzzzzz ...