Syntractrix - Alchetron, The Free Social Encyclopedia

A syntractrix is a curve of the form

x + b 2 − y 2 = a ln ⁡ b + b 2 − y 2 y .

It is the locus of a point on the tangent of a tractrix at a constant distance from the point of tangency, as the point of tangency is moved along the curve.

References

Syntractrix Wikipedia

(Text) CC BY-SA