Polar Coordinate Graphs - Sharp EL-9650 Operation Manual

5. Polar Coordinate Graphs

A polar coordinate graph shows coordinates with distance r from the origin point and
positive-value angle θ from the X axis.
When the polar coordinate graph mode is selected, pressing
<Example>
To draw a polar coordinate graph of cosθ:
1. Set to the polar coordinate graph mode
Press Ï E 3.
2. Entering equations.
In the polar coordinate graph mode, the equation input
screen (press
equations (R1 to R6) to be entered.
When is pressed, the cursor pointer positioned at [R1].
Enter the equation.
Press c ®.
3. Drawing graphs.
Press . A small oval graph appears on the display,
as shown on the right.
The oval graph results because the display pitches of
the X and Y axes are not the same.
(The default X and Y range settings are valid for an initial graph display.)
) allows a maximum of six
93
GRAPHING FUNCTIONS
enters the value of θ.