User Manual

Instructions
An instruction (command) initiates an action on the calculator. For example, ClrDraw is
an instruction to the calculator to clear drawn elements from a graph. Instructions
cannot be used in expressions. In general, the first letter of each instruction name is
uppercase. Some instructions take more than one argument, as indicated by an open
parenthesis at the end of the name. For example, on the TI-84PlusCE, Circle( requires
three arguments, and has two optional arguments: Circle(X,Y,radius[,color,
linestyle]).
Interrupting a Calculation
To interrupt a calculation or graph in progress, which is indicated by the busy indicator
in the status bar, press É.
When you interrupt a calculation, a menu is displayed.
• To return to the home screen, select 1:Quit.
• To go to the location of the interruption, select 2:Goto.
When you interrupt a graph, a partial graph is displayed.
• To return to the home screen, press ‘ or any non-graphing key.
• To restart graphing, press a graphing key or select a graphing instruction.
TI-84 Plus CE Edit Keys
Keystrokes Result
~ or | • Moves the cursor within an expression; these keys repeat if held down
on the keypad.
} or † • Moves the cursor from line to line within an expression that occupies
more than one line; these keys repeat if held down on the keypad.
• Moves the cursor from term to term within an expression in MathPrint™
mode; these keys repeat if held down on the keypad.
• On the home screen, scrolls through the history of entries and answers.
y | • Moves the cursor to the beginning of an expression.
y ~ • Moves the cursor to the end of an expression.
ƒ } • Moves the cursor out of a MathPrint™ expression and up into history on
the home screen.
• Moves the cursor from a MathPrint™ expression to the previous Y-var in
the Y=editor.
ƒ † • Moves the cursor from a MathPrint™ expression to the next Y-var in the
Y=editor.
Í
• Evaluates an expression or executes an instruction.
Evaluating Expressions 33