Sequences, Cumulative Sums, Partial Sums Plot --- Ti-89 Titanium My proffessor just gave us all these packets for all these programs he wants us to put into our calculators. They are for a Partial Sums Plot, and a List of Cumulative Sums, nth terms and differences. They're all for the Ti-83 though. I am hoping the 89 does all this without writing programs. He's thrown all this stuff at us without even explaining really what were doing. I basicly want to know how to use the 89 for graphing Sequences, Cumulative Sums, and Partial Sums Plots.