#### Locus

Mark a point B that depends on another point A and whose locus should be drawn. Then, click on point A.

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

Example:

· Type f(x) = x^2 – 2 x – 1 into the input field.

· Place a new point A on the x-axis (see mode New point; see command Point).

· Create point B = (x(A), f’(x(A))) that depends on point A.

· Select mode Locus 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.

Related Topics

3.2.12. Locus

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