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�A微分	d dx cot⁡x

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( cot⁡x ) ′ = ( cos⁡x sin⁡x ) ′ = ( cos⁡x ) ′ sin⁡x−cos⁡x ( sin⁡x ) ′ ( sin⁡x ) 2 = − sin⁡ 2 x− cos⁡ 2 x sin⁡ 2 x =− 1 sin⁡ 2 x =−cos⁡e c 2 x

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戻る

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