Solution 16532: Graphing a Partial Sum of a Sequence on a TI-89 Family, TI-92 Family or Voyage™ 200 Graphing Calculator.
How do I graph a partial sum of a sequence on a TI-89 family, TI-92 family or Voyage 200?
To graph a partial sum of a sequence, please see the example provided and follow the steps listed below.
Example: Graph a partial sum of the sequence 1/(x^2) with a low of 1 and a high of 10.
1) Press [♦] [Y=].
2) Press [2ND] [MATH] [B:Calculus].
3) Choose 4: ∑( sum.
4) Enter [ [÷] [ALPHA] [A] [^]  [,] [ALPHA] [A] [,][ 1] [,] [X] [)].
Please Note: On the TI-92 family and Voyage 200, the ALPHA function does not have to be used since these calculators have a built-in QWERTY keyboard.
5) Press [ENTER].
6) Press [♦] [GRAPH].
For calculators without OS 3.10, the graph will look like the following:
Please see the TI-89 family, TI-92 family and Voyage 200 guidebooks for additional information.