Locus Tool

Select a point B that depends on another point A and whose locus should be drawn. Then, click on point A to create the locus of point B (see also Locus command).

Note: Point A has to be a point on an object (e. g. line, segment/interval, circle).

Example:

• Type f(x) = x^2 – 2 x – 1 into the Input Bar and press the Enter-key.
• Place a new point A on the x-axis (see New Point tool; see Point command).
• Create point B = (x(A), f'(x(A))) that depends on point A.
• Select tool and successively click on point B and point A.
• Drag point A along the x-axis to see point B moving along its locus line.

Warning:

Locus is undefined, if the dependent point depends on Point Command with two parameters or PathParameter Command.