Texas Instruments TI 84 User Guide - Page 157
Defining and Displaying Sequence Graphs, TI-84 Plus Graphing Mode Similarities
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Defining and Displaying Sequence Graphs TI-84 Plus Graphing Mode Similarities The steps for defining a sequence graph are similar to the steps for defining a function graph. Chapter 6 assumes that you are familiar with Chapter 3: Function Graphing. Chapter 6 details aspects of sequence graphing that differ from function graphing. Setting Sequence Graphing Mode To display the mode screen, press z. To graph sequence functions, you must select Seq graphing mode before you enter window variables and before you enter sequence functions. Sequence graphs automatically plot in Simul mode, regardless of the current plottingorder mode setting. TI-84 Plus Sequence Functions u, v, and w The TI-84 Plus has three sequence functions that you can enter from the keyboard: u, v, and w. They are above the ¬, −, and ® keys. You can define sequence functions in terms of: • The independent variable n • The previous term in the sequence function, such as u(nN1) • The term that precedes the previous term in the sequence function, such as u(nN2) Chapter 6: Sequence Graphing 154
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