This key takes you to the function entry screen. You may enter up to 10 functions. You may turn functions on/off by left cursoring over the = sign and entering.
For example: This screen shows Y1 turned off and Y2 turned on. Only Y2 would graph when you pressed the "GRAPH" button.
This window lets you sett the window and scale parameters. The following may be modified.
Xmin: The x-value at the left corner of the screen.
Xmax: The x-value at the right corner of the screen.
Ymin: The y-value at the bottom of the screen.
Ymax:The y-value at the top of the screen.
Xscl: The distance between each tick on the x-axis.
Yscl: The distance between each tick on the y-axis.
This key allows you to trace (get the x and y values along the graph) using the arrow keys.
Graph the chosen functions in the current window.
X,T,O We will use this key to enter an x-variable into a function.
LINK ( 2nd X,T,O )
STAT We will use STAT|LIST to look at gathered data. We will use STAT|CALC|QUADREG to do quadratic regression.
STAT ( 2nd Y= ) STAT|PLOT is used to make statistical plots. This will be looked at in
PLOT another tutorial.
PRGM We will use the PRGM key to run programs.
Clearing the memory on the TI-83+