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数学
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x-1分之(sin x)^2-(sin 1)^2的极限,x趋向于1
人气:470 ℃ 时间:2019-11-10 09:19:33
解答
洛必达法则,分子分母分别求导,得到2sinXcosX,带入X=1得2sin1cos1=sin2
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