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Answers
(x)'sqrt(4-x²)+x(sqrt(4-x²))'
=sqrt(4-x²)+x(4-x²)'/2sqrt(4-x²)
= sqrt(4-x²)+x²/sqrt(4-x²)
あ、ごめんなさい、2項目は+じゃなく-です((4-x²)'=-2xなので)
わかりました!丁寧にありがとうございます!
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ありがとうございますわかりました!