Mathematics
Senior High
Solved
この赤枠のとこはなぜこうなるのですか?
67 (1) S=1.1+3.2+5.22+AJ
(S+++(2n-1)-2"-1
2S 1-2+3.22 +5.23+ +(2n-3).2"-1
+(2n-1) 2n
·
aa
辺々を引くと
CAS
-S=1+2(2+22+23+...+2"-1)
Job
-
(2n-1) 22
よって
S=-1-2.
2(2n-1-1)
2-1
+(2n-1).2"
=(2n-3) 2"+3
•
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
