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3 Decision Commands on the TI-84 Plus

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The If command

The structure of the If command appears in the first screen. If the condition following the If command is true, the program executes the command following the If statement (Command 1) and then moves on to the next command in the program (Command 2).

If the condition following the If command is false, the program skips the command following the If statement (Command 1) and then moves on to the next command in the program (Command 2).

An example of using the If command appears in the second screen. The program in this screen gives a 10 percent discount on items that cost $50 or more. The input and output commands (Input, Disp) in this program are housed in the Program I/O menu, which is accessed by pressing [PRGM] and the right-arrow key. You can enter the inequality that appears in this screen by pressing [2nd][MATH][4].

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