A flashlight has a parabolic reflector that reflects light

Last updated: 4/2/2024

A flashlight has a parabolic reflector that reflects light waves from a bulb located at the focus The figure shows a vertical cross section of such a parabolic reflector with the bulb at the focus Suppose the bulb is 0 4 inch from the vertex of the reflector and the distance across the widest part of the reflector is 6 inches Suppose also that the parabola formed y 10 4 in x 6 in by the cross section is located on a grid so that The figure may not be drawn to scale the vertex is at 0 0 The equation for the parabola is