Mathematics
Senior High
22の(3)を教えてください。
練習
22
次の和を求めよ。
n
n
(1) Σ8k (2) (10k+1) (3)
k=1
n
(3) 2 (k-1)
k=1
k=1
n
(4) Ź (-3)
k=1
第1節 数列とその 81
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