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135
4. Press J to return to the graphs, and then press 3 (IN) to enlarge them.
This enlarged screen makes it clear that the graphs of the two expressions are not
tangential.
Note that the above procedure can also be used to reduce the size of a graph
(zoom out). In step 4, press 4 (OUT).
• The above procedure automatically converts the x-range and y-range View
Window values to 1/5 of their original settings. Pressing 6 (g) 5 (PRE)
changes the values back to their original settings.
• You can repeat the factor zoom procedure more than once to further enlarge or
reduce the graph.
uu
uu
uTo initialize the zoom factor
Press 2 (Zoom) 2 (FACT) 1 (INIT) to initialize the zoom factor to the
following settings.
Xfact = 2 Yfact = 2
• You can use the following syntax to incorporate a factor zoom operation into
a program.
Factor <X factor>, <Y factor>
• You can specify only positive value up to 14 digits long for the zoom factors.
• You can use factor zoom for any type of graph.
kk
kk
k Auto View Window Function [Zoom]-[AUTO]
The auto View Window feature automatically adjusts
y-range View Window values
so that the graph fills the screen along the y-axis.
Example To graph y = x
2
– 5 with Xmin = –3 and Xmax = 5, and then use
auto View Window to adjust the y-range values
1. After graphing the function, press 2 (Zoom).
2. Press 5 (AUTO).
Other Graphing Functions 8 - 6
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