For the sequence

MATHEMATICS · Single correct · A Level · Mathematics · Sequences and series · Sequences and series

Problem

For the sequence 2,12,−1,−52,…2, \dfrac{1}{2}, -1, -\dfrac{5}{2}, \ldots, find the common difference. (a) 32\dfrac{3}{2} (b) −1-1 (c) −2-2 (d) −32-\dfrac{3}{2}

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