226
2. Press w, and the pointer appears at the pointer start point (anStr = 0.01).
• The Y value for the pointer start point is always 0.
3. Each press of w draws web-like lines on the display.
w
↓
w
↓
This graph indicates that recursion formula an+1 = –3an
2
+ 3an is convergent.
Example 2 To determine whether or not the recursion formula bn+1 =
3bn + 0.2 is convergent or divergent.
Use the following table range.
Start = 0 End = 6
b0 = 0.02 bn Str = 0.02
Use the View Window parameters from Example 1.
1. Press 6 (TABL) 4 (WEB) to draw the graph.
16 - 3 Editing Tables and Drawing Graphs
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