For n Z+, find in (1 + x + x2)(1 + x)n the coefficient of (a)
Question:
(a) x7;
(b) x8; and
(c) xr for 0 < r < n + 2, r ∈ Z.
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Related Book For
Discrete and Combinatorial Mathematics An Applied Introduction
ISBN: 978-0201726343
5th edition
Authors: Ralph P. Grimaldi
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