Chapter 17: Activities 471
The standard window variables define
the viewing window as shown. Xmin,
Xmax, Ymin, and Ymax define the
boundaries of the display. Xscl and Yscl
define the distance between tick marks
on the X and Y axes. Xres controls
resolution.
2. Press 0 Í to define Xmin.
3. Press 20 ¥2 to define Xmax using an
expression.
4. Press Í. The expression is
evaluated, and 10 is stored in Xmax.
Press Í to accept Xscl as 1.
5. Press 0 Í 500 Í 100 Í 1
Í to define the remaining window
variables.