For i = 1,2,3,... , n, letxibegivenby 1.ri)':= j[(.tr r)2

Chapter 5, Problem 78

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For i = 1,2,3,... , n, letxibegivenby 1.ri)':= j[(.tr r)2 *.ri-rxr * (,xi)2] Show first that.ri-l < xi < ,rr. Then use the algebraic identity (c - d)(c2 + cd + d2): c3 - d' to show that -j_It";t: a'' = lrbi - dt. i-l Explain why this computation proves that tb I ,'d* = {1br - art.

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