Mathematics
Senior High
Solved
答えになるまでの途中式が分からないです
よって 2/23s=
1
-
3
n
#SOSAN
1
1
(E
n2=0
3" =
3
1
n
-
2
=4(10
3n
3"
立い
3n+1-2n-3
2.3"
3n+1-2n-3
4.3"-1 112 = 10
2tJ
したがって S=
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