Parametric Graphing 350
Standard values (set when you select 6:ZoomStd from the „ Zoom toolbar menu) are:
You may need to change the standard values for the
t variables (tmin, tmax, tstep) to
ensure that enough points are plotted.
Exploring a Graph
Exploring a GraphExploring a Graph
Exploring a Graph
As in function graphing, you can explore a graph by using the following tools.
tstep Increment for the t value. Parametric equations are
evaluated at:
x(tmin) y(tmin)
x(tmin+tstep) y(tmin+tstep)
x(tmin+2(tstep)) y(tmin+2(tstep))
... not to exceed ... ... not to exceed ...
x(tmax) y(tmax)
xmin, xmax,
ymin, ymax
Boundaries of the viewing window.
xscl, yscl Distance between tick marks on the x and y axes.
tmin = 0
xmin =
L10. ymin = L10.
tmax = 2p
(6.2831853... radians
or 360 degrees)
xmax = 10. ymax = 10.
tstep =
p/24
(.1308996... radians
or 7.5 degrees)
xscl = 1. yscl = 1.
Variable Description
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