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Unformatted text preview: a , and any integer n . 1 + a + a 2 + ··· a n1 = 1a n 1a . (An easy way to derive this is to multiply the left hand side by 1a , and notice all the cancellation that results). Applying this with a = r 2 , we get that ` n = ± 1r 2 n 1r 2 ² 1 / 2 . (b) Computing the dot product, 1 r r 2 . . . r n1 · 1 s s 2 . . . s n1 = 1 + rs + ( rs ) 2 + ··· + ( rs ) n1 = 1( rs ) n 1rs . 21 /september/ 2005; 22:09 31...
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This note was uploaded on 10/03/2010 for the course MATH 380 taught by Professor Gladue during the Fall '08 term at Roger Williams.
 Fall '08
 Gladue
 Calculus, Vectors

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