Enter functions x_{1}(t) and
y_{1}(t)
in the text input fields
marked "x_{1}(t)="
"y_{1}(t)="
(Example:x_{1}(t)=cos t,
y_{1}(t)=sin t)
Click the "Graph" button
(this button also refreshes the graph)
To see two parametric curves graphed simultaneously:
Enter the second set of functions
x_{2}(t) and
y_{2}(t)
in the text input fields marked
"x_{2}(t)="
"y_{2}(t)="
Click (to its "on" state) the check box next
to these input fields
Click the "Graph" button
(Example:x_{1}(t)=cos t,
y_{1}(t)=sin t;
x_{2}(t)=t-1,
y_{2}(t)=1-t)
Up to 3 curves can be graphed simultaneously
To remove a function from the graph, click (to its "off" state)
the check box next to the associated text input fields and click
the "Graph" button to refresh
To erase the graph and all input fields, click the
"Clear" button
The parameter t ranges from
t_{min} to
t_{max}.
The values of t_{min} and
t_{max} can be changed
(in increments of 0.1) by clicking the
"+" and "-"
buttons under the fields marked
"t_{min}=" and
"t_{max}=".
Holding the buttons down causes the action to repeat.