If r = (x, y, z), a = (a 1 , a 2 , a 3 ),
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If r = (x, y, z), a = (a1, a2, a3), and b = (b1, b2, b3), show that the vector equation (r - a) • (r - b) = 0 represents a sphere, and find its center and radius.
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ra r b 0 implies that the vectors ra and r b are orthogonal From the diagram in which ...View the full answer
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