Locus Tool
From GeoGebra Manual
Revision as of 14:28, 27 July 2015 by Sabrina.azesberger (talk | contribs)
- 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 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.
- Type
Warning: | Locus is undefined, if the dependent point depends on Point Command with two parameters or PathParameter Command. |