Given a point (the focus) and a line (the directrix), we examine the locus of the points whose distance from the focus is k times the distance from the directrix. With k>1, the curve is a hyperbola.
Expressions
| Name | Input | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Focus 1 |  |
 |
 |
 |
 |
 |
 |
 |
 |
| Focus 2 | |
|
|
|
|
|
|
|
|
