Let , be the separation vector from a fixed point (x', y, z') to the point (x,
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Let π, be the separation vector from a fixed point (x', y’, z') to the point (x, y, z), and let π be its length. Show that
(a) ∆ (π2) = 2 π
(b) ∆ (1/π) = – π/π2.
(c) What is the general formula for ∆(πn)?
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