A = (s, y) 1. Derive the equation for the mirror surface such that light incident on the left, from a source at infinity, will be focused at F. The equation should be written only in terms of s, y and f (the curve will map out points like A with coordinates s and y). You do not need to simplify the equation. Cy incident ray f=rt8 S=2¢? =7 2rt28 A-(s n2f =nr top scor sftJpetyz 1
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