Mathematics
Senior High
Resolved
数Bの階差数列についてなんですが、この(2)はどことどこが消えて2行目の式になっているんですか？
56
66* 次の和を求めよ。
n
(1)Σ
1
k=1 √√k+2+√√k+3
√692-√693
(0 < 0) (SEU NET)
(6+2)-(673
17
(6+2)-(6-17
I
よって扉を
-
=
-(
= (√4-√3) + (√4-54)* (1√6-df) t...e (days - Jaez)
<√273-53
48
<(2) √
k=1
=√904549-√2-51
い
=5√/247-12-18614√2
Jack-57
S+I
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