20070201
Example Draw a line that is tangent to point (2, 0) on the graph for
y = x ( x + 2)( x – 2).
Use the following V-Window settings.
Xmin = –6.3, Xmax = 6.3, Xscale = 1
Ymin = –3.1, Ymax = 3.1, Yscale = 1 (initial defaults)
Procedure
1 m GRAPH
2 !3 (V-WIN)1 (INIT)J
3 !m (SET UP)cccccc 1 (
)J
4 3 (TYPE)1 (Y=)v ( v +c)( v -c) w
5 6 (DRAW)
6 !4 (SKTCH)2 (Tang)
7 e ~e w *
1
Result Screen
5-10-2
Changing the Appearance of a Graph
*
1
You can draw a tangent line in succession by
moving the “
” pointer and pressing w .
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