Graphing a Hyperboloid of Two Sheets in 3D

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In this video I sketch a hyperboloid of two sheets, which is a quadric surface with horizontal traces being hyperbolas while vertical traces are comprised of both hyperbolas and ellipses. There are no vertical traces in the xz-plane thus the quadric surface is split into two sheets, hence the name: Hyperboloid of Two Sheets.

GeoGebra 3D graphing calculator: https://www.geogebra.org/3d/tabys4ec

Time stamps:

  • Example 7: Hyperboloid of Two Sheets: 0:00
  • Solution: Re-arranging equation into standard form: 0:17
  • Comparing equation with hyperboloid of two sheets from Table 1: 1:56
  • Traces in xy and yz-planes are hyperbolas: 2:09
  • Traces in y = k planes are ellipses: 3:41
  • No traces in the xz-plane: 5:57
  • Re-writing y = k traces equation: 6:44
  • Sketching the graph using traces: 7:48
  • Graphing in GeoGebra: 10:55

Full video below:

  • Cylinders and Quadric Surfaces:
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