FLASHLIGHT The light bulb in a flashlight is at the focus of the parabolic reflector
Chapter 4, Problem 43(choose chapter or problem)
FLASHLIGHT The light bulb in a flashlight is at the focus of the parabolic reflector, 1.5 centimeters from the vertex of the reflector (see figure). Write an equation for a cross section of the flashlights reflector with its focus on the positive -axis and its vertex at the origin. FIGURE FOR 43 FIGURE FOR 44
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