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153
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uTo use factor zoom
With factor zoom, you can zoom in or zoom out on the display, with the current
pointer location being at the center of the new display.
• Use the cursor keys (d, e, f, c) to move the pointer around the display.
Example Graph the two functions below, and enlarge them five times in
order to determine whether or not they are tangential.
Y1 = (x + 4) (x + 1) (x – 3)
Y2 = 3x + 22
Use the following View Window parameters.
Xmin =–8 Ymin =–30
Xmax = 8 Ymax = 30
Xscale = 5 Yscale = 10
1. After graphing the functions, press 2 (Zoom), and the pointer appears on the
screen.
2(Zoom)
2. Use the cursor keys (d, e , f, c) to move the pointer to the location that
you want to be the center of the new display.
d ~ d f ~ f
3. Press 2 (FACT) to display the factor specification screen, and input the factor
for the x- and y-axes.
2(FACT)
fwfw
1 2 3456
Other Graphing Functions 8 - 6
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