- Press the MODE key (second row).
- Use the ARROW keys and the ENTER key to select Pol as shown to the right.
- Press the Y= key. Note that you can now enter polar equations of the form r=f(theta).
- Enter the function r1=1.5-2.5*cos(theta). To get "theta" (the symbol, NOT the word), use the variable key (x,T,"theta") in the third row.
- Press ZOOM then 4 to get the graph shown to the right.
- The WINDOW key (top row) allows you to change screen parameters.
|
|
