Mathematics
Senior High
Solved
数列の問題です。
水色波線の部分がどうなっているのか分かりません。
途中式か考え方をわかりやすく解説してほしいです
N = 2 + Z
-10-3-2
+2.
3-10.1-6-3702
5
(-3) -²+2n.
1-(-3)
+2(n-1)
3
2
-
2.
Answers
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