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Designing a Flashlight Mirror The mirror of a flash light is a paraboloid of revolution Its diameter is 6 cm and its depth is 2

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Designing a Flashlight Mirror The mirror of a flash light is a paraboloid of revolution Its diameter is 6 cm and its depth is 2 cm How far from the vertex should the filament of the lightbulb be placed for the flashlight to have its beam run parallel to the axis of its mirror 6 cm 2 cm

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