- Click on a point or enter a complex number in the field labelled 'z'.
- Choose the number of roots (up to 12) from the list labelled 'n'.
- Press the 'Show roots' button to show the roots."
- The number 'z' is shown in black. The principal root is shown in a different colour from the rest.
- Dragging the point will show how the roots change as it moves.