Texas Instruments TI-84 PLUS SILV Guidebook - Page 20

Note: The Catalog Help App contains syntax information for most of the functions in the catalog. Instructions An instruction initiates an action. For example, ClrDraw is an instruction that clears any 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, Circle( requires three arguments, Circle(X,Y,radius). Interrupting a Calculation To interrupt a calculation or graph in progress, which is indicated by the busy indicator, 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 Edit Keys Keystrokes ~ or | } or † y | y ~ y } y † Í ' Result Moves the cursor within an expression; these keys repeat. Moves the cursor from line to line within an expression that occupies more than one line; these keys repeat. Moves the cursor from term to term within an expression in MathPrint™ mode; these keys repeat. On the home screen, scrolls through the history of entries and answers. Moves the cursor to the beginning of an expression. Moves the cursor to the end of an expression. On the home screen, moves the cursor out of a MathPrint™ expression. In the Y=editor, moves the cursor from a MathPrint™ expression to the previous Y-var. In the Y=editor, moves the cursor from a MathPrint ™ expression to the next Y-var. Evaluates an expression or executes an instruction. On a line with text on the home screen, clears the current line. On a blank line on the home screen, clears everything on the home screen. In an editor, clears the expression or value where the cursor is located; it does not store a zero. Chapter 1: Operating the TI-84 Plus Silver Edition 13