数学
高校生
(2)の式が矢印のようになるのはなぜですか?
(1)
よって
n
k2+3kn+2n2
n
(k+n)(k+2n)
2N
n
limΣ
= lim Σ
→k=n+1
k²+3kn+2n2
2錠
1
1
k+n
k+2n
12
1
1
= lim
- k=+1
k
k
+1
+2
n
n
1
1
=
k+n
k+2n
=
*+1
12) dx=[log|x+1|-log|x+2]
x+2
= log 3-log 4-(log 2-log 3)=2log 3-3log2
3 2020 電通大 2022 札医大, 2016 横国大 ]
2月
(1) 極限値 lim
n
を求めよ。
+12+3kn+2m2
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