QOMO Flow!Works 3.0 - Manual (Page 93)

93
Step three: Adjust the functional image to finish the drawing. Select the functional image, and
adjust the length of the axis and the space of the axis. The variable angle's maximum value
is "720 " and the minimum value is "0.”
Adjust the variable angle of polar coordinate
Tip: In order to write easily in the polar equation, we use "X" instead of "θ.” Their functional
images are the same.
Parametric equation
Example 3: Draw the parameter equation: (t ∈ r, t for the parameters) functional image.
Step one: Add "parameter equation". Click the "coordinate system: parametric equation" in the
"function" button and then add it to the edit page on the white board. The system default
functional expression is: x(t)=8*cos(t), y(t)=4*sin(t).
Figure3- 1 System default parameter equation's functional image
Step two: Correctly input the functional expression. Select the added default functional image,
and find the "appearance" option on the left side "Attribution Browser" , then input the
functional expression. The corresponding functional image appears, shown in Drawing the
parametric equation image.