The first step you must take before calculating reqcursive sequences is to switch you calculator into sequence mode. To do this press the [mode] button and press the down button 3 times. You should be on the mode selection menu. Press the right button until `SEQ`

is selected. Hit [enter]. Your calculator has now been set into sequence mode. To exit the mode menu, press [clear].

Now that your calculator is in sequence mode, a few things have changed. The [X,T,O,n] button now types n. The [y=] menu now allows you to enter sequences.. Press [y=] to get started. There are a number of entry fields presented to you. `nMin`

should always be 1. `u(n)`

, `v(n)`

, and `w(n)`

allow you to enter the sequence. In order to type this into the entry field, you will need to use two new keys. You should replace `x`

in the equation with `u`

, `v`

, or `w`

, depending on which entry field you are using. To access these symbols, press [2nd]+[7],[8], or [9]. The symbol that will be typed is shown in blue above their respective number keys.

Now that you know how to enter the sequence, I will walk you through entering the Fibonacci sequence.The Fibonacci sequence is one of the most popular mathematical sequences. The Fibonacci sequence can be represented as ` x(n) = x(n-1) + x(n-2)`

. Enter the [y=] menu if you aren't already in it. Scroll down to `u(n)`

. Press [2nd] and [7] to enter `u`

. Press [(]. Press the [X,T,O,n] button to enter `n`

. Press [-], [1], and then [)] to finish with the 1st term. Press [+] to start on the second term. Again, press [2nd] and [7] to enter `u`

. Press [(]. Press the [X,T,O,n] button to enter `n`

. Press [-], [2], and then [)] to finish with the 1st term. You have now programmed in the sequence, but we aren't finished yet. We will need to enter `u(1)`

and `u(2)`

. The 1st and 2nd terms of the Fibonacci sequence are both 1. Enter these now. You have now programmed in the sequence.

To graph the sequence, press [graph]. The sequence may be too large or too small to be viewed on the display. Luckily, there is an easy fix for this. Simply press [zoom]+[0]. Your calculator will automatically zoom in or out to fit the graph on the screen. To return the zoom to normal, press [zoom]+[6].

Because you have graphed the sequence, the steps to view a table of it's vlaues are very simple. Press [2nd]+[graph][table]. You will now see a table of the values of the sequence. To increase the "step" size (the difference between each value shown, press [+] and enter your desired step size. Press [enter] to recalculate.