Mathematics
Senior High
最後の方の計算がわかりません( ˘•ω•˘ ).。oஇ
詳しく教えて欲しいです🙇♀️
(5) (3*-4³)
23* - 2k³
k=1
k=1
=
=
-
=
k=1
n
an
23.3-1–24191]
k=1
(1)(11) くくり出す
k=1
3(3-1)
3-1
- { + / + n(n+1) } ²
2
{2.3¹+¹ — n²(n + 1)² − 6}
08
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