Mathematics
Senior High
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和を求める問題ですが、これはaのところが省略されてるのは1だからですか?
(k+1)
(2) n.2*-1
k=1
+3.4+5 6+...+(2n-1)-2n
(2)(与式)22-12-1=m(2"-1)
(5+)=3(2k-1)-2k=(4k²-2k) =4-n(n +
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ありがとうございます