[Shadows] Consider a unit sphere centered at the origin which is made of glass; the sphere is sitting on the plane z = -1 and has a light source at the very top of the sphere. (a) The sphere has a dot drawn on it; the shadow of the dot on the plane z = -1 is at the point (1,0,-1). Where is the dot drawn on the sphere? (b) The sphere as a circle drawn around the sphere; the shadow of the circle on the plane z = -1 is the circle centered at the point (0,0,-1) with radius 4. Give a parametrization for the circle on the sphere?

Advanced Engineering Mathematics
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Chapter2: Second-order Linear Odes
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2. [Shadows] Consider a unit sphere centered at the origin which is made of glass; the sphere is sitting on the
plane z = -1 and has a light source at the very top of the sphere.
(a) The sphere has a dot drawn on it; the shadow of the dot on the plane z = -1 is at the point (1,0,-1).
Where is the dot drawn on the sphere?
(b) The sphere as a circle drawn around the sphere; the shadow of the circle on the plane z - -1 is the circle
centered at the point (0,0,-1) with radius 4. Give a parametrization for the circle on the sphere?
Transcribed Image Text:2. [Shadows] Consider a unit sphere centered at the origin which is made of glass; the sphere is sitting on the plane z = -1 and has a light source at the very top of the sphere. (a) The sphere has a dot drawn on it; the shadow of the dot on the plane z = -1 is at the point (1,0,-1). Where is the dot drawn on the sphere? (b) The sphere as a circle drawn around the sphere; the shadow of the circle on the plane z - -1 is the circle centered at the point (0,0,-1) with radius 4. Give a parametrization for the circle on the sphere?
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