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数学
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当x趋于0时,下列变量中与(sin^2)x等价无穷小量的是( ):A:根号x B:x C:x^2 D:1-cosx
人气:116 ℃ 时间:2020-05-02 13:53:12
解答
C:x^2
sinx~x
(sin^2)x~x^2
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