Use mathematical induction to prove that a + (a + d) + (a + 2d) , n(

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Use mathematical induction to prove that 

a + (a + d) + (a + 2d) , n(п — 1) + ... + [a + (n – 1)d] = na + d- 2

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Precalculus

ISBN: 978-0321716835

9th edition

Authors: Michael Sullivan

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