Mathematics
Senior High
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(2)の計算がよくわからないです
3
n
n
(2) ⠀ (4k³ − 1) = 4☎ R³-14 (
-
k=1
k=1
k=1
2
-
- n
Mix = 4({ / ^ n^n + 1)} ² _
= n{n(n²+2n+1) − 1}
= n(n³+2n²+n−1) f
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めっちゃわかりましたー
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