Casio CFX9850GBPLUS User Manual page 245

k WEB Graph (Convergence, Divergence)
Description
y f x
= ( ) is graphed by presuming
a
composed of ,
n
+1
divergent.
Set Up
1. From the Main Menu, enter the RECUR mode.
2. Make V-Window settings.
Execution
3. Select 2-term recursion as the recursion formula type, and input the formula.
4. Specify the table range,
5. Display the recursion formula number table.
6. Draw the graph.
7. Press w , and the pointer appears at the start point you specifi ed.
Press w several times.
If convergence exists, lines that resemble a spider web are drawn on the display.
Failure of the web lines to appear indicates either divergence or that the graph is
outside the boundaries of the display screen. When this happens, change to larger
V-Window values and try again.
You can use fc to select the graph.
# To change the graph line style, press
1 (SEL+S) after step 4.
Graphing a Recursion Formula
a y
= ,
n
+1
a
. Next, it can be determined whether the function is convergent or
n
n
start and end points, initial term value, and pointer start point.
5-9-7
a x
= for linear two-term regression
n
# With WEB Graph, you can specify the line type
y f x
for a = ( ) graph. The line type setting is valid
only when "Connect" is selected for "Draw Type"
on the Setup screen.
20070201
a f a
= ( )
n n
+1