Texas Instruments TI-89 Manual Book page 9

While in split screen mode, you can change the coefficients and
recalculate the solutions. The graph does not automatically
update for the new values. To update the graph, select
2 ˆ (TI-89) or ˆ
from the Coefficients or
1:Open Graph
Solutions screen.
Quitting the graph
1. Press 2 a to switch to the Coefficients or Solutions
screen.
2. Press 2 ˆ (TI-89) or ˆ
2:Quit Graph.
TI-89 / TI-92 Plus / Voyage™ 200 PLT Polynomial Root Finder App Page 9