26.11.2  Hyperbola in the plane

For hyperbolas in space, see Section 27.9.3.

The hyperbola command draws hyperbolas and other conic sections. hyperbola can take parameters in two different ways.

• hyperbola can take one argument: eqn, a second degree equation in the variables x and y (or an expression which will be set to zero).
• hyperbola(eqn) returns and draws the conic section given by the equation eqn.
• Alternatively, hyperbola can take three arguments:
  • A,B, two points.
  • C, a point or a real number.
• hyperbola(A,B,C) returns and draws the hyperbola with foci A and B and passing through C (if C is a point) or whose semi-major axis has length C (if C is a real number).
• Note that if the third argument is a point on the real axis, the real affix of the point won’t work, it needs to be specified with the point command.

Examples