PARAMETRIC EQUATIONS Graphing Plane Curves (Page 4 of 12)

There are three new settings related to the parameter t. Tmin is the initial t value, Tmax is the final t value, and Tstep determines how the values of t will be spaced. Notice that a standard window has t values that range from 0 to 2π.
 WINDOW key. Calculator screen image.

Change the WINDOW settings as shown. Observe that we are now allowing t to take on negative values.

 Negation key. 10 ENTER key. 10 ENTER key. 0.2 ENTER key.
 Negation key. 20 ENTER key. 20 ENTER key. 5 ENTER key.
 Negation key. 1 ENTER key. 6 ENTER key. 1 ENTER key.		 Calculator screen image. Calculator screen image.
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