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Matthen

Lamp projects a hyperbola

Jun 9th, 2011
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  1. r = 1; Manipulate[
  2. Show[ParametricPlot[{-Y Cos[\[Theta]]/Sin[\[Theta]],
  3. Y h/(r Sin[\[Theta]])}, {\[Theta], 0.1, Pi - 0.1},
  4. PlotRange -> {{-4, 4}, {0, 10}}],
  5. ParametricPlot[Y {Sinh[t], h /r Cosh[t]}, {t, -3, 3}]]
  6. , {Y, 1, 3}, {h, 0.1, 3}]
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