Mathematics
Senior High
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数列のシグマの問題です。この後カッコの中を2で割ると、頭についている1/2はどうなるのでしょうか?

13 26. (1) (3-2) ふ 3. h(n+1)(2n+1)- In(n+1)-24 2 1/2n{(n+1)(2n+1)-(n+リー4} 1/21~12m²+3u+1-n-1-4) //n(2²+2m-4)

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