The sum of the first n terms of a sequence is Sn = (1/2)n(n+1). Find
the nth term.
A. n
B. n+1
C. 2n
D. 2n+1
F5 Maths sequence
2010-12-22 5:38 am
回答 (1)
2010-12-22 5:47 am
收錄日期: 2021-04-23 23:22:38
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