Plots > XY Plots > Plotting Functions > Example: Using Range Variables in Plots
  
Example: Using Range Variables in Plots
Use range variables when plotting functions to control the number of plotted points and the range over which functions are plotted.
1. Define a range variable.
Click to copy this expression
2. Use the range variable as the independent variable in a parametric plot. Add crosses from the Symbols list to mark the location of the plotted points.
Click to copy this expression
3. To increase the number of plotted points, repeat steps 1 and 2 with a range variable that has a step size of 0.1.
Click to copy this expression
Click to copy this expression
You can view the points plotted in the first two plots:
Range Variable
Y-axis expression
X-axis expression
Click to copy this expression
Click to copy this expression
Click to copy this expression
Click to copy this expression
Click to copy this expression
Click to copy this expression
4. To increase the range of the plotted points, repeat steps 1 and 2 with a range variable that has an end limit of 2 π.
Click to copy this expression
Click to copy this expression