Conic Sections: Parabolas

  • When the eccentricity equals one, a parabola results
  • Note that a parabola is "closed" at infinity!

Conic Sections: Hyperbolas

  • When the eccentricity is greater than one, a hyperabola results
  • Note that a hyperola is not "closed", but rather it is "open"

ConicSections3.jpg (91731 bytes)

Click on the above image (from Zeilik & Gaustad, 1990) to enlarge

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Slide 11