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257
Editing Tables and Drawing Graphs 16 - 3
kk
kk
k Before Drawing a Graph for a Recursion Formula
You must first specify the following.
• Draw/non-draw status of for the recursion formula
• The type of data to be plotted
To specify the draw/non-draw status, display the Recursion Menu and then press
1 (SEL).
uu
uu
uTo specify the draw/non-draw status of a formula
There are two options for the draw/non-draw status of a recursion formula graph.
• Draw the graph for the selected recursion formula only
• Overly the graphs for both recursion formulas
To specify the draw/non-draw status, use same procedure as that for specifying
generation/non-generation status.
uu
uu
uTo specify the type of data to be plotted (Σ Display: On)
You can specify one of two types of data for plotting.
• an on the vertical axis, n on the horizontal axis
• Σan on the vertical axis, n on the horizontal axis
In the function menu that appears while a table is on the display, press 5 (G•CON)
or 6 (G•PLT) to display the Plot Data Menu.
1 (an) ........... an on the vertical axis, n on the horizontal axis
6 (Σan) ......... Σan on the vertical axis, n on the horizontal axis
Example 1 Draw a graph of an+1 = 2an + 1 with an on the vertical axis and n
on the horizontal axis, and with the points connected.
Set the following parameters in the View Window.
Xmin = 0 Ymin = 0
Xmax = 6 Ymax = 65
Xscale = 1 Yscale = 5
6(TABL)5(G•CON)
(Selects connected type.)
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