Question: The light from a lamp creates a shadow on a wall with a hyperbolic border. Find the equation of the border if the distance between

The light from a lamp creates a shadow on a wall with a hyperbolic border. Find the equation of the border if the distance between the vertices is 18 inches and the foci are 4 inches from the vertices. Assume the center of the hyperbola is at the origin.

The light from a lamp creates a shadow on a wall with

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