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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/unesp/360901
Title: 
Parabolic envelope from congruent triangles
Author(s): 
Calkins, Harry
Language: 
eng
Description: 
  • Consider a line l and a point P not on l. Drag the orange point Q along l. Draw a vertical line m from Q. The perpendicular bisector k of PQ meets m at a point R that traces out a parabola and k is tangent to the parabola. The focus and directrix of the parabola are P and l because PQR is isoceles. The part of the vertical line m inside the parabola is the reflection in k of the ray PR
  • Componente Curricular::Educação Superior::Ciências Exatas e da Terra::Matemática
Issue Date: 
  • 15-Sep-2008
  • 15-Sep-2008
  • 15-Sep-2008
  • 13-Sep-2008
Keywords: 
  • Parabolic
  • Educação Superior::Ciências Exatas e da Terra::Matemática::Análise Complexa
Credits: 
This demonstration needs the "MathematicaPlayer.exe" to run. Found in http://objetoseducacionais2.mec.gov.br/handle/mec/4737
Source: 
http://objetoseducacionais2.mec.gov.br/handle/mec/5395
URI: 
http://acervodigital.unesp.br/handle/unesp/360901
Rights: 
Demonstration freeware using Mathematica Player
Type: 
outro
Appears in Collections:MEC - Objetos Educacionais (BIOE) - OE

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