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© 2012 Texas Instruments Educaon Technology Page 33
Next add a second funcon f4(x)=f3(x-d) by pressing
eF3(X-D)·, this funcon is a transformaon of
the original funcon by . Now grab the handle on the slider
and move it le and right and observe the eect on the graph.
Try changing the original funcon, or moving the posion of
in f4 to explore other transformaons.
We normally think of sequences as being lists of numbers,
but somemes it is useful to look at them graphically. The
TI-Nspire makes this easy with the aid of its sequence plong
mode. To do this, create a new Graphs page by pressing c
then selecng .
Then press b351 to put the TI-Nspire in to sequence
mode. Enter the nth term of the sequence as u1(n)=2n-1 and
enter the Inial as the rst term in the sequence, ,
and press ·.
Adjust the window seng by pressing b41 and change
the x-axis to go from -2 to 21 and the y-axis to go from -2
to 42. Now you can explore the sequence further by using
Graph Trace b51 or by displaying the sequence as a table
by pressing /T.
You can also use the sequence ploer to explore recursive
sequences. For example you could instead dene
u1(n)=u1(n-1)+u1(n-2) and set the set to
(1,1) which would give you a Fibonacci sequence.
Finally save the document as so that you can
refer to these graphs later.