Mathematics
Senior High
Resolved
なぜここがマイナスに変わるのか教えてください。
1 3
9-x2
(4) S.√9³.
dx=
3
∞ = So (3 + x) (3 — x)
dx
1
+
0
23+x
3-x
x) d x
1
=
3+x
1/2 log
3-x
=(log 2-log 1)=log 2
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ありがとうございます